Gravecreeper

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The Gravecreeper (whose name is Atlus Creeper) is a Dungeoneering boss monster that can be fought on the Occult floors of Daemonheim, requiring a Dungeoneering level of 71 to encounter and fight. He is a zombie, so it has high constitution and is weak to slash attacks. It is also weak to magic attacks, especially fire spells. The Gravecreeper has an experience multiplier, giving double the normal amount of experience for each hit. For example, hitting a 315 would give you 333 XP on the stat that you are training.

The battle
Be sure to turn auto-retaliate off when fighting with melee during this battle. Otherwise, the boss's attacks may lure you onto the unsafe purple puddles that the room will be filled with.

Normal attacks
The Gravecreeper has a ranged attack, where it throws a spinning axe, and a melee attack, where it swings the sword it's holding. Its ranged attack can be partially blocked by prayer, but its melee attack can be completely blocked, so players should pray melee when in melee range. This attack can drain your prayer by 1. The melee attack is extremely accurate, even when wearing full Katagon it usually hits over 100, while the ranged is semi-accurate and also tends to hit high. The melee attack hits extremely fast while the ranged is at standard speed, similar to the ranged zombies.

It sometimes shouts "Buuurrnnnn!", and then surrounds itself with a 3x3 square of puddles of purple liquid (somewhat like the portals summoned by Bal'lak the Pummeller). Being near the boss when he releases this attack will disable your prayers—though they can be turned on again almost immediately—and continuing to stand on the liquid will deal rapid damage and drain 20 prayer points per hit. The puddle's hit can vary, from low to around 150, so players should step out of it quickly or teleport out via gatestone. Teleporting DOES NOT stop the prayer drain if this move is activated.

Special attack
The Gravecreeper's special attack begins when it digs into a plinth (shouting "Burrrrrry", "Digggggg", or "Brrainnns" just before); then, a number of the plinths in the room start to glow with a purple colour, and a few purple clouds appear. After a few seconds, all of the glowing plinths will explode, releasing purple clouds and surrounding themselves with purple puddles that function like the boss's attack, dealing significant damage to players who stand on them. When the portals explode, they will also disable prayers and drain prayer points. However, it will also SEVERELY lower your defence, so bringing restore potions might be a good idea. The puddles will remain that way for quite some time, usually until the end of the battle. The purple clouds will not disappear, and act like the Corporal Beast's attack, which shoots out and splits. This can be avoided by running away from them, or teleporting out via gatestone. Gatestones are a good way to not die, as you can teleport at any time.

You can also choose to prevent the tombs from exploding, by quickly cleansing the tombs that turn purple. This costs prayer points, but immediately brings the boss out from under the plinth and prevents the affected plinth/s from releasing the puddles of purple liquid. It is best to cleanse a few of these tombs, in order to have safe ground to stand on while killing the boss. If you have no prayer points, you will be able to bless the tomb, but you will also be dealt up to 50 damage.

Be careful the moment after he appears again. Most of the time the room will be partly filled with purple liquid, and he's likely to be standing in the middle of it. If he attacks you then and you are meleeing with auto retaliate on, he'll cause you to run through the purple liquid, causing massive damage (and most of the time instant death).

If the boss is standing in an area completely covered by purple liquid after the tombs explode, it can be too dangerous to melee him. In order to move him off the liquid, every player on the team should teleport out. The boss will follow the last player he was attacking, and that player can move around outside the boss room in order to lure the boss to a safer area. Note that no matter how full of puddles the room becomes, the two squares near the entrance will never be covered by purple liquid from the boss's special attack. They can, however, be covered by his "Burrrnnn!" attack. This allows a narrow area for the boss to be killed in if necessary. A mage or ranger can take advantage of this by turning off auto-retaliate and attacking only from the two spaces, never worrying about the Gravecreeper's special attacks.

Strategy
The gravecreeper boss takes up a lot of food and/or prayer. Players need to constantly be on the look out for his "burnnn" special attack and move away when necessary to prevent huge amounts of damage. Pray ranged upon entering the room, run up to the boss, and quickly switch to protect from melee. Assuming 4 people are dealing with boss, and there is no access to an altar, each player should cleanse one tomb each. Teleporting out is highly not recommended as a method to avoid the special attack. if there is access to an altar, cleanse as many as tombs as you can. It is possible for nearly no puddles to appear during the special attack if the party is spread out and cleanses tombs quickly. Should the boss be impossible to get to, turn on protect from ranged until the puddles vanish.

If the above is followed, the boss should be reasonably easy as he has little defence and will focus mainly on using melee if within melee range.

Drops

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Trivia

 * Currently a bug causes many players games to crash when encountering this boss when it does its special attack(s). A patch to resolve this issue was released on 12 October 2011.
 * The graves on his room, when examined, show text on "deceased" Jagex Moderators, including Mod Trick, Mod Nexus, Mod Liono, Mod Benny, Mod Hulme, Mod Reese, and Mod Chris L:
 * "Rest.in p.ace, ..od Tri.k."
 * "M.d Nex.s..is n. more."
 * "..od Li.no died h..re."
 * "Her..lies .od B.nny.."
 * "H.re..lies M.d.Hulm.."
 * "Re.t.in peace, Mo. Ree.e."
 * "Here lies M.. ..Chr.s L."
 * The music track's unlock hint originally read "This track unlocks default info", however this was patched by Jagex in a hidden update a week after its release. It now reads "This track unlocks during Dungeoneering".
 * When performing the Dungeoneering master cape emote, the player casts Fire Surge to kill a Gravecreeper in one hit.
 * After defeating a Gravecreeper in a dungeon, your Adventurer's log reads: "I killed a boss monster called: Grave Creeper in Daemonheim." However, the boss' name is spelled wrong, as "Grave Creeper" is the name for the tier 10 tree found inside Daemonheim.
 * His Ranged attack has the hearing sound of what seems to be similar to the ranged zombies and Sergeant Grimspike's attack. When the attack hits however, it seems to have the sound of a pickaxe hitting a monster.
 * Despite the purple puddles disappearing rapidly, they can still be seen. Luckily though, they don't deal damage. This is probably due to an animation delay which Jagex have acknowledged but are not planning to fix in the near future.
 * If a player dies to his special attack, you can see that the damage has both unblockable and magic damage.

Gravecreeper Gravecreeper