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[[D1 Diablo|Diablo]] is found in a closed square on the lower left quarter end boss of level 16Diablo and Hellfire, and must be killed to earn "dots" of rank on Battle.net. In the box surrounding Diablo are at least 8 mages multiplayer he isn't worth more experience than a regular monster, and 10 knightsdoesn't drop special items, though others (randomly spawned) are usually found in there as well. To access Diablobut he's box you must throw both skull levers in the + shaped box in still fun to kill for the top left corner challenge of level 16; this can be done by entering the box (by throwing other skull levers on the level) or simply using telekinesis over the wallit. This page covers strategy techniques, ways to pick up his drop, tricks and tips, and much more.

* See [[D1 Diablo|Diablo's stats]] here...* Information about the [[Diablo: D1 Quest|Diablo quest]] here.

More so than any other monster, Diablo should be fought solo; he's hard enough without knights joining in, or Advocates launching fireballs. The easiest way to lure out Diablo is with a trick; use Holy Bolt. Diablo is a Demon, but he's also vulnerable to Holy Bolt; the only Demon in the game who is. This isn't a tactic to kill him; it's just a trick to "wake up" Diablo without disturbing any of the knights or mages. If your aim is true (watch the map, aim right down the center of the room, and shoot in a straight line), Diablo will grunt in pain and come charging out to fight.  A more aggressive way to bring him out is to simply run up and let him see you. This isn't especially advised through, since the knights will all pour forth as well. It's possible to visually nibble your way in, moving just close enough for the knights (and mages) on one side to see you, then backing off around the corner to kill them. It can also be fun to cast fire spells into the room; guardian or fire wall are amusing, but Flame Wave is the best, since it will sweep through the entire square and hit everything not behind one of the corner walls. Note that Advocates are fire immune on Hell, and will not react to flame attacks. Diablo has by far and away the highest hit points, AC, and damage in the game (and they're raised still further on Hellfire), so prepare for a long fight. (His full stats are listed on [[D1 Diablo|his of any monster page]].) As with any tough fight, it's wise to stock up on potions in advanceDiablo, and to make sure your equipment is fully-repaired. Drop extra potions on the ground if you think you'll need them, since it's faster to pick them up than try to click and drag them from your inventory to your belt mid-fight. The key to beating Diablo is the same as though there were rollover bugs with most tough melee bosses; make sure you've got plenty of to/hit his AC and a fast swing. Hitting him with your swings is more important than doing a bit more damage, so if you must choose damage vs. to/hit, take the prior to/hitv1. Being able to block 07 that made his attacks (both his melee and his Apocalypse spell can be blocked) helps, as does doing sufficient damage to rock him.  Apocalypse is auto-targeting, but it takes a fraction of a second to appear after it's cast. This makes it possible to dodge the spell, if you change direction constantly. Walk values in a zig zag while leading Diablo to the spot you wish to fight him in; walking in a straight line will let his every Apocalypse hitthose stats quite low on Hell difficulty. Diablo uses the same AI as the Magma Demons. His spell is Apocalypse, not throwing a molten rock, but he moves around the same way, dancing side to side and circling the target. This AI is very evident if you use a weapon with knock back, since every time you push Hellfire increased Diablo more than a step away he'll run back and start circling again, while periodically pausing to cast Apocalypse.  Positioning is important against Diablo, since he has a knock back hit. If you want to go toe to toe, put yourself against a wall or in a corner, and make sure he's hitting you back against the wall. Your character will not be knocked back and can keep whacking away non-stop. You can use his knockback to your advantage if you're lower on AC, hit points, or lack good blocking. In that case make sure there is '''not''' a wall behind you. This way Diablo will never hit you twice in a rowstats considerably, since though his hits will knock you backwards. Keep swinging, you'll be able to get in a free hit or two every time you are pushed back, when he has to move forward to get back into melee range. An oddity of this style of fight is that your character will be steadily pushed back out of their light radius. There's a bug in Diablo in which a character's or monsters's light radius only readjusts if the character actually moves. If you stand still AI and get knocked back by attacks, your light radius will remain where you last moved, until you move again when it will jump back to display properlyother behaviors were unchanged. This can be observed when using a bow with knock back against a boss, or (more painfully) when Diablo beats your character halfway across a level. Since the game ends when you kill Diablo, itHere's wise to prepare in advance. Be sure you've picked up everything you left in town and done your final shopping and repairs. If you want to do a full clear quick listing of 16, you'll need to lure Diablo away and then return to clear out his box. In multiplayer, this is easily done by exploiting the fact that characters do not drop their equipment when they die on level 16. Simply cast a town portal somewhere out of sight near Diablo's box, wake Diablo up, and lead him to the other side of the level. Let him kill you there, restart main stats in town, and take your portal back down. If your character has teleport ditching Diablo is even easier; just lead him around to the right side of the level and teleport over a wall. Be sure you're far enough from the opening in the center of the level that he can't pathfind his way around after you.    ===Killing Diablo=== see [[Image:Flux-diablo.jpgD1 Diablo|frame|Not fireproof.Diablo's page]]This should be a major and very important section, but sadly enough, it's not. Why? Because Diablo isn't anywhere near as difficult as he should be. This is a quick reference table; [[D1 Diablo|for his full stats]] can be seen herein Diablo and Hellfire.

[[Image:Flux-diablo.jpg|frame|Not fireproof.]]Despite his very high hit points, Diablo isn't that hard for a character with good equipment and of a sufficient Clvl. Lower level characters, or those without good to/hit, can have a very hard time landing hits on the Dark Lord. Magic users have an easier time, since Diablo is never immune to fire or lightning. Diablo has by far the highest hit points, AC, and damage in the game (and they're raised still further on Hellfire), so prepare for a long fight. As with any tough fight, it's wise to stock up on potions in advance, and to make sure your equipment is fully-repaired. Drop extra potions on the ground if you think you'll need them, since it's faster to pick them up than try to click and drag them from your inventory to your belt mid-fight. The key to beating Diablo is the same as with most tough melee bosses; make sure you've got plenty of to/hit and a fast swing. Hitting him with your swings is more important than doing a bit harder more damage, so if you must choose damage vs. to/hit, take the to/hit. Being able to block his attacks (both his melee and his Apocalypse spell can be blocked) helps, as does doing sufficient damage to rock him.   ==Luring Him Out== More so than any other monster, Diablo should be fought solo; he's hard enough without knights joining in, or Advocates launching fireballs. The easiest way to lure out Diablo is with v1a trick; use Holy Bolt. Diablo is a Demon, but he's also vulnerable to Holy Bolt; the only Demon in the game who is. This isn't a tactic to kill him; it's just a trick to "wake up" Diablo without disturbing any of the knights or mages. If your aim is true (watch the map, aim right down the center of the room, and shoot in a straight line), Diablo will grunt in pain and come charging out to fight.07 A more aggressive way to bring him out is to simply run up and let him see you. This isn't especially advised through, since the knights will all pour forth as well. It's possible to visually nibble your way in, moving just close enough for the AC knights (and hp bugs mages) on one side to see you, then backing off around the corner to kill them. It can also be fun to cast fire spells into the room; guardian or fire wall are fixedamusing, but Flame Wave is the best, since it will sweep through the entire square and hit everything not behind one of the corner walls. Note that Advocates are fire immune on Hell, and will not react to flame attacks.  ==Apocalypse== Diablo has the same AI as a Magma Demon. He casts Apoc instead of hurling a flaming boulder, but hemoves in the same fashion -- dancing around at a distance and circling the target, before closing in to deal melee damage. This makes him hard to hit with ranged attacks. Diablo casts Apocalypse, the only monster in the game with this ability. Apoc is auto-targeting, and will hit any character in a direct line of sight, no matter how far away. (Though Diablo doesn't cast Apoc unless he sees a valid target.) Though Apocalypse is auto-targeting, it takes a fraction of a second to appear after it's cast. This makes it possible to dodge the spell, if you change direction constantly. Walk in a zig zag while leading Diablo to the spot you wish to fight him in; walking in a straight line will let his every Apocalypse hit. Apocalypse hits for physical damage. It's not fire, lightning, or magic, and is therefore impossible to resist. It can be blocked though, like any other physical attack, and players with shields, or a Monk with a staff, can block it if they are standing still and/or fighting. It can't be blocked while walking, or while casting a spell.  ==Knockback== Positioning is important against Diablo, since he has a knock back hit. If you want to go toe to toe, put yourself against a wall or in a corner, and make sure he's hitting you back against the wall. Your character will not too toughbe knocked back and can keep whacking away non-stop. You can use his knockback to your advantage if you're lower on AC, hit points, or lack good blocking. In that case make sure there is '''not''' a wall behind you. This way Diablo will never hit you twice in a row, since his hits will knock you backwards. Keep swinging or shooting, and you'll be able to get in a free hit or two every time you are pushed back, when he has to move forward to get back into melee range. An oddity of this style of fight is that your character will be steadily pushed back out of their light radius. There's a bug in Diablo in which a character's or monsters's light radius only readjusts if the character actually moves. If you stand still and get knocked back by attacks, your light radius will remain where you last moved, until you move again when it will jump back to display properly. A mage This can be observed when using a bow with knock back against a boss, or (more painfully) when Diablo beats your character halfway across a level.   ==Killing Diablo== Since the game ends when you kill Diablo, it's wise to prepare in advance. Be sure you've picked up everything you left in battle setup can pretty town and done your final shopping and repairs. If you want to do a full clear of 16, you'll need to lure Diablo away and then return to clear out his box, before dealing with him.  ===Ditching Diablo=== In multiplayer, this is easily defeat done by exploiting the fact that characters do not drop their equipment when they die on level 16. Simply cast a town portal somewhere out of sight near Diablo's box, wake Diablo up, and lead him to the other side of the level. Let him kill you there, restart in town, and take your portal back down. If your character has teleport, ditching Diablo is even easier; just lead him around to the right side of the level and teleport over a wall. Be sure you're far enough from the opening in the center of the level that he can't pathfind his way around after you. If you must ditch him (single player) and don't have teleport, it can be a challenge. Lead him far away, ideally to the upper right corner of the level, and walk around the square with the bone level inside. Diablo will usually wander off in one direction or another, and if you make a break for it when he's heading the other way, you can often shake him. He can follow you even if you're considerably off the screen though, so be sure you break his line of sight by standing moving around walls or corners.  Another good way to lose him is to use Phasing. This won't work if you're in an open area, but if you take him into the center of the spiral section to the lower right of level 16, you can usually pop over the wall in one direction with a cast of Phasing, and ditch him that way.  ==Hellfire Diablo== Diablo in Hellfire has considerably increased stats, and his AI has been modified a bit as well. No longer will he walk right into a fire or lightning wall, but this intelligence can be used against him.  Like all Hellfire monsters, he'll stay out of a fire or lightning wall if he's not immune to it. Trick him with this technique. Put up a wall between yourself and Diablo, and then cast one behind him when he runs up to it and swinging stops there. He'll cast Apocalypse constantly, but if you put another wall on him when he can't retreat or advance without moving into more fire, he'll simply stand there, roasting. This is most useful with a shieldranged attacking character, and a rogue or sorcerer can trap Diablo, then fire arrows or nail him with spells while he's standing helpless.   ==The Battle== Actually fighting Diablo isn't that complicated. He fights like any other melee monster, with his knockback attack adding something odd to the battle. He's immune to magic and resistant to fire/lightning, so most Sorcerers use fireballs for their huge damage. Mages are advised to fire freely, and to use teleport to retreat or to leapfrog over Diablo when he gets into melee range.  AoE spells are helpful too; make Diablo stand in a Firewall (or 10) and he'll cook nicely while he battles you. Guardians work too, and though they're much less damaging per second, you can cast quite a few of them, and they'll hit Diablo even as he moves around.  Golems can help, but Diablo will smash a shield golem in an instant; the way to use the stone man is to let Diablo knock you against a wall so he won't move, and then cast the Golem behind him.  Lightning is not often used against Diablo, but Lightning Wall works just as well as Firewall, in Hellfire. Chain Lightning can be used too, but not when Diablo is actually faster for the last monster on the level. Lure him out with Holy Bolt and then position him so he's between you and his box; the background of monsters inside will give you at least a mage dozen streams of Chain to swing pour into Diablo. You can use the top left corner + box as well, if you threw the skull levers over the wall instead of opening the room up and clearing out the inhabitants. No matter what the location though, Chain Lightning is tough to use to finish Diablo with than on Hell. A Hell difficulty [[Knight|Steel Lord]] has 723 hit points on MP Diablo (that's the actual value, not the buggy value displayed in the game). Diablo has 6667 hit points on Hell difficulty. So count how many Chains you need to kill a Steel Lord, and then multiply that by 9. Firewall time, indeed.  ==Diablo's Drop== Diablo drops items like a regular monster. Not like a boss. This means that he doesn't usually drop anything at all, and that when he does drop something it will most likely be a stack of gold or something non-haste/speed weaponmagical. He does occasionally drop a magical or unique item, but the odds of this happening are very poor. Even when he does drop, there's nothing special about it in Diablo. In that game, Diablo can't drop any items higher level than any normal Blood Knight or Advocate on his level. In Hellfire his Mlvl is much higher than in Diablo, so it's theoretically possible for him to drop something you'd otherwise only find from Wirt. No player has ever reported this actually happening, though. Since the game ends when Diablo dies, his drop would seem to be irrelevant, but that is not the case. There is a way to pick up his drop, but some preparation is necessary. The player must have enough free space in their inventory to hold the item, and must cast Telekinesis '''before''' Diablo dies. Casting TK turns the cursor into a special grabbing icon; if this is ready before Diablo spouts blood, screams, and the controls freeze, then the player can pick up whatever (if anything)Big Red drops.

The apocalypse D attacks with hard part is nasty only if you killing him without being able to left click. Spells that hit over time are moving the best technique; Firewall or w/o a shieldGuardian work nicely, as you can almost always block it if you remain stationarybut they must be timed properly. Ways to speed up his death are adding spells Furthermore, there's a bug in Diablo that will keep on giving prevents a player from drinking anything from their belt while you are taking the brunt of his affectionsTK grabber is active. GolemIf your health falls too low during the battle, firewalls under while you're waiting for Diabloto die with TK cast, you's feetll need to left click to use the TK, or many guardians all work nicely. You can also cast drink a bunch of firewalls and/or guardians in an area potion, and then teleport over the wall or even die. Your guardians or firewalls will live on and keep hurting him, and he's too stupid to runcast TK again quickly.

But these are the finesse techniques. I used The usual method is to just take him face to face and treat him like a big blood knightfight Diablo normally, IE fireball, fireball, fireball, repeat as needed. If you lack the AC to let him get close and keep casting with spells, you can leapfrog him with teleports and always have him advancing on you. It might be more difficult to hit him then howeverarrows, as he has a bit of the happy feet and will prance around some in the fashion of a Goat man or a Balrog. (Diablo has the same AI as Magma Demons.) He also has a knockback attackmelee weapon, so ituntil he's important that you choose your place of battle carefullyalmost dead. Since his declining hit points do not show, with your back to a wall and your firewall right in front of you, so he doesn't come in and knock you back and then advance a stepll need to count, moving right out of the firewallor estimate. From the chart If you can see that Diablo is vulnerable to lightning as well as fire, but fireballs do so much more damage that they are the way to go, even if you get a very nice background for the chain. I've killed Diablo on normal and nightmare by luring him out of his box previously with holy boltthe same equipment, moving over to simply count the side so I had a nice corner shot at his boxnumber of hits it took, and then chaining him with fifteen or more streams going out aimed at count the blood knights next time, and advocates in his box when you're just about to that number, stop hitting and hitting cast a few Firewalls under him on , or Guardians all around the wayarea. Holy bolt can also be very useful for killing him on normalThen cast TK and wait. This is obviously easier with better AC and more hit points, as since Diablo will continue hitting you while you should be able to stun lock him 're waiting with itthe TK grabber.

One other tip, if you keep a space clear in your inventoryThe whole procedure takes some practice, but it's not that hard to grab whatever Diablo drops. Get him almost dead, and have him in a fire field or with sufficient guardians, or else have him attacking too tricky once you while your golem hits him from behind. Then cast telekinesis, so you get 've gotten the TK cursor up, but don't click hang of it on anything yet. Wait It's not worth the trouble for Diablo to die while you have the TK cursor ready, and items you'll have about 5 seconds to grab what he drops (if anything) while he screams find, which will be few, far between, and bleeds and the screen fades to black. Diablo has no special ability to drop anything better than any of the other monsters though, so don't get your hopes very seldom worth picking up too high. (He is a higher monster level than anything else in Hellfire though, so possibly but there he could drop something you'd normally have to buy from Wirt.) I did this many many times s a sort of moral victory in not only killing Diablo, netting maybe 20 items, and of them about 3 or 4 were magical. My best ever was a magical long battle bowbut in also grabbing his drop, simply because the game is designed to make that ID'ed as platinum of giants, as I recall. Nothing worth the effort, in other wordsimpossible without using this workaround.

There is another technique to go through a town portal back up to town after ===Multiplayer Diablo dies but before the game ends, and with it you could then come back down and get anything he dropped, but I honestly don't remember quite how to do it, and it didn't work as well as the TK method anyway.s Drop===

Of course the simplest A far easier way to get Diablo's drop is to play with some other player(s) and have one of them people. Everyone on any level besides 16 is frozen when you kill Diablo. Everyone on lvl 16 dies, and then automatically exits from kicked out of the game and is taken to the ending movie, but if you are . Any player not on lvl level 16is unaffected, (In and if they have a town = not portal open on lvl 16, btw) you they can keep playing without interruption. And then go down easily descend to 16 to see what if the lowest level and pick up anything Diablo dropped. The others player who killed Diablo can even rejoin the game after their automatic exitand go down a friend's town portal, if they are so inclined.

One last note on Hellfire Diablo. He's not much tougherNote that if the player hosting the TCP/IP or Modem game is the one who lands the kill, but he's smarter, sort of. Like all Hellfire monsters, he'll stay then the game will close and kick other players out of a fire or lightning wall if he's not immune to it. You can use this to your advantage, by casting a few to block his advance towards yourself. HeSo be sure you'll get up to re the edge of one joining the wall and scoot back and forth and apoc like mad. Put another wall behind himgame, so he can't go back, and then put one (or ten) more right on top instead of him. He'll stop movinghosting it, since any direction brings him more damage, and won't even apoc if you anymore. This is a very useful trick for a rogue, as you can do this want to kill Diablo and then arrow him to death w/o a thought, but obviously with a mage you can go to work with fireballs and finish him off very quickly, or just keep refreshing rejoin the fire/lightning walls and watch him slowly withergame.