Instanced raiding was never really a thing in Oldschool
Runescape until the addition of Chambers of Xeric and the Theatre of Blood.
Unlike other MMORPG’s, there is no linear progression as a wide variety of
combat levels may attempt each one, although completing them is another story.
Within this OSRS Raids Guide, you will get the gist on how they work and
how to get started.
What do I need to know about Chambers of Xeric?
The Chambers of Xeric came out as an expansion to the
already new continent of Zeah and is considered the first instanced raid in the
game. Reminiscent to Dungeoneering from Runescape 3, this raid required a
combination of combat and skilling to progress through the rooms and there is
an element of randomization to every raid instance.
To even consider stepping into this raid, groups will want
you to at least have 100 combat with high Hitpoints, 55 Farming, and 78
Herblore. A big part of doing raids is the ability to make various potions
using Farming and Herblore, particularly for Xeric’s Aid. Other skills like
The following bosses may be encountered with Great Olm
always being at the end:
- Vasa Nistirio – He turns from an animated
pile of rocks to his final form. The main thing to be concerned about is his
ability to teleport party members to various parts of the room.
- Tekton – This boss cannot be touched by
either range or magic, which means players will have to stomp him with melee.
It is recommended to use Dragon Warhammer special attacks to make the fight
- Vespula – This abyssal creature attacks
with range and has hard-hitting poison, so using a Serpentine helmet could be
- Vanguard – These three mysterious
creatures each are only attackable with either Range, Magic or Melee. Damage
must be spread equally to kill them, so coordination is key.
- Ice Demon – This has a very high magic
level and can deal nasty Ice Burst spells to players. Players will first need
to dispel the ice storm to advance in the fight.
- Muttadiles – This crocodile-mutant thing
attacks with both range and melee. The usual strategy is to stay within melee
distance with protect prayers and attack it with range.
- The Great Olm – A giant white salamander
that guards the chest at the end of the raid.
For more RuneScape, check this out: OSRS Barrows Guide
Idea Gear Setup
- Full void with all three helmets.
- Zamorakian Hasta or Abyssal Tentacle for a melee
- Toxic Blowpipe or Twisted bow for the ranged
- Trident of the Swamp for Magic attack
- Amulet of Torture or Fury
- Ring of Suffering
- Avernic or Dragon defender
- Primordial Boots or Dragon Boots
- Ava’s Assembler
Defeating the Great Olm
There are three phases that Great Olm rotates, which
dictates which part of the body the raid group can attack. The Dragon
Warhammer special attack may be used on each target body part to reduce is
stats and does not apply to other body parts.
During the first phase, he attacks with rotations of his
special attacks, including the AoE Crystal Burst, bolts of lightning and
teleports the players around the chamber. The hand that is clenched cannot be
attacked, so go for the other.
The second phase will be similar to phase one, although
one of the other hands may be clenched and unable to be attacked. If the left
hand is clenched, the special attacks from the first phase will not be
Both hands will be attackable in the third phase, in which
the must be downed at the same time. He will teleport players around the room,
dealing damage, and will then heal the left hand. This phase will need careful
coordination within the party.
The final phase will just be against Olm’s head and he
will be using all of the attacks in his arsenal. The main thing to watch out
for is the falling crystals that damage players if they don’t move out of the
day. The party should focus on DPS to get him down before anyone gets killed
(which would affect your points).
Making Money from Chambers of Xeric
While expensive drops are quite rare, resource drops in
the chest can result in over 1 Million gold per hour if done on a consistent
basis. You are pretty much set if you receive a Twisted Bow (currently 1.1
billion gold) or the Dragon Hunter Crossbow (currently over 100 million gold). The
chance to receive better drops is influenced by having more points at the end
of the raid.
For more RuneScape, check this out: OSRS Demonic Gorilla Guide
What do I need to know about the Theatre of Blood?
The Theatre of Blood has the hardest PvM content in the
game, although it is completely linear unlike the Chambers of Xeric. It was
created in June of 2018 in order to revive the otherwise dead content of
Meiyerditch. There are six bosses in total and each one is extremely difficult
with their own peculiarities.
Just like in the first raid, supply drops are common
rewards at the end of the run, although usually in lower quantities. The main
attraction is its rare drops, all of which are still traded at relatively high
prices. The big-ticket items include the Syche of Vitur (which is over 1.3
billion gold), the Ghrazi rapier (over 180 million gold) and the Sanguinesti
Staff (over 140 million gold).
The gear choice for the Theatre of Blood is simply to
bring best-in-slot gear in the game for each attack style, and every member
should hybrid/tribrid. The inclusion of blood barrage or the Sanguinesti Staff
for self-healing is also vital. Although it’s extremely expensive, Twisted Bows
are commonly brought by most raid members.
- Xarpus – An otherworldly bat creature
that can heal himself and deal with poison damage. Players will constantly need
to avoid poisoned tiles while dealing damage to the boss.
- The Maiden of Sugadinti – The maiden will
throw blood spots that need to be dodged and occasional magic attacks at the
tank. At multiple points of the fight, she will also spawn healers that need to
be killed immediately.
- Pestilent Bloat – While this abomination
is slow, being attacked by its flies can kill a raid party very quickly.
Falling corpses that stun and damage players can also ruin a run.
- Nylocas Vasilias – This fight consists of
killing various waves of creatures before being able to hit the boss. Multiple
attack styles will be needed.
- Sotetseg – A corrupted dark beast with a
complex tile puzzle that raid parties need to solve in order to kill him.
- Verzik Vitur – The final boss of ToB and
one of the most difficult in the game. She turns into a spider-like creature
and has multiple phases.
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Defeating Verzik Vitur
This fight is notoriously difficult and consists of
three phases. Players will obtain the Dawnbringer from the skeleton corpse at
the entrance, which will be used later on.
During the first phase, players must mitigate damage by
hiding behind pillars during her attacks. The Dawnbringer is the best weapon to
use as any other weapon has capped damage and isn’t viable. She will then fly
off and come back to body slam players, so be mindful about avoiding it.
Nycolas may also be spawned to heal her and should be targeted before they heal
In the second phase, she will shoot blue projectiles that
will travel around the room and players need to avoid. When she does her attack
rotation, she will body slam players when they try to melee her. This can be
avoided by stepping back between hits. If she spawns a purple Nycolas, attack
it with a poisoned weapon (like the blowpipe) in order to deal poison damage to
In the third phase, she will reveal her spider-like
appearance and the fight gets more treacherous. She shoots barbs and does a
blue magic attack, so switch prayers accordingly. She also has a powerful AoE
attack, in which there is a small safe spot where raid members need to gather
if they don’t want to die. Also, watch out for her web attacks that bind
players and do periodic damage.
Both raids have so far been amongst the hardest and most
engaging content in the game, which is why it also has the best rewards.
Hopefully, this OSRS Raids Guide will inspire you to gear up and get a
group together to take on these challenging bosses.
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