Treus Dayth

Treus Dayth is the boss monster in the Haunted Mine quest. He has the power to possess objects around him and send them hurtling towards players. He is summoned when the player attempts to pick up the Innocent-looking Key. He can be fought in the Nightmare Zone after completion of the Haunted Mine.

He uses these three main attacks:

• Crane - The possessed cranes will attack the player if the player moves to a square directly adjacent to it, dealing up to 10 typeless damage. This is the second most dangerous attack out of the three.
• Mine Cart - When the player steps on a cart track, a mine cart will be sent tumbling after them. This can hit up to 9 typeless damage every game tick, which can equal to 36 damage every 2 seconds if the player is unlucky. This is the most dangerous attack. This attack can be easily avoided by running across the tracks instead as the cart will only move when the player is in its target range. However, the boss fight is very long, so bringing super energy or stamina potions is highly recommended.
• Pickaxes - If the player is not near any other obstacle, the player will be attacked by projectile pickaxes. These hit up to 15 damage each. The Protect from Missiles prayer only provides 33% protection from this attack, reducing it to a max of 10. Pickaxes are the second least dangerous attack.
• Melee - If the player is standing next to Treus Dayth, he may rarely use a melee attack that deals up to 8 damage. This is the least used attack and also the least dangerous.

Lord Drakan had the Abandoned Mine destroyed after the holy River Salve started to seep into the lower shaft of the mine. Although most of the water was tainted by the land's twisted soil, some remained pure and retained Saradomin's blessing. Purple crystals were growing in the mine and absorbed the blessing. When exposed to the unholy creatures of the land, the crystals would severely weaken or even kill them. To prevent the crystals from falling into the hands of Saradominists, Drakan then imprisoned Treus Dayth, who was one of his followers, to guard the crystals on the lowest level. Even after Treus Dayth died, his tortured soul continued to serve as the mine's guardian.

Treus Dayth frequently teleports to spots where the machinery can hit you. All that needs to be done is look where he is standing, and carefully walk around equipment to get to him. He can be difficult to fight for multiple reasons:

1. He controls the objects around the room, namely the mine carts and cranes, causing them to damage you. The cranes will attack you immediately if you come close enough, but Protect from Melee helps to mitigate some of the damage they do. Treus may activate the mine carts when you step on the mine cart tracks, and he will activate the mine carts much more frequently the closer he comes to dying.
2. He will move around the room, only staying in one place for a very short amount of time, though he only moves once you begin to attack him. He tends to shift around with increased frequency the closer he comes to dying, sometimes even only allowing you one attack, regardless of whether it lands.
3. He will regularly hit upwards of 10 with the pickaxes. An inventory of good food (preferably monkfish or better) is recommended.

The player will take substantial damage constantly; if it's not the mine carts or the cranes, it's the pickaxes that will hit you anywhere you are in the room. Protect from Missiles helps since his attack style is Ranged-based, although this merely reduces damage, and his attacks are still quite damaging. Using super energy or stamina potions is also a good idea as the boss fight is extremely long because of how he moves around. Having to walk around whilst being hit by the mine carts and cranes can be deadly, especially if the player is low-levelled.

Note that air spells and the Crumble Undead spell are quite effective and viable. Because of all the obstacles in the room, using Magic or Ranged will often require that you stand next to him to be able to attack, so it is best you use your strongest attack style as each is essentially limited to Melee range.

For lower levels who have access to wind spells or Crumble Undead, using these with Rune armour may be the easiest method. Since Treus Dayth has negative magic defence, players can still hit even when wearing armour like Rune. Having more defensive armour than something like Mystic can drastically reduce damage taken from the surroundings.

Rings of recoil do not work against Treus Dayth.

Treus Dayth
Level required					40
Prayer XP					20 xp
Type					Spectral creature
Required tool					Ectoplasmator

v t e Haunted Mine
NPCs	Zealot Haze Ghost Mischievous ghost Monsters Animated spade Corpse Possessed pickaxe Skeletal miner Treus Dayth
Items	Crystal-mine key Damp tinderbox Glowing fungus Salve shard Zealot's key
Rewards	Salve amulet
Locations	Abandoned Mine
Music	Haunted Mine Spooky 2 Deep Down Chamber
Related	Quick guide Transcript Abandoned Mine Lair of Tarn Razorlor Crystal outcrop