Cerberus Guide

Cerberus is the three-headed hellhound behind the Keymaster's gate - 91 slayer required, and the teleport lands at 1310, 1252 right at the lair door. It is a prayer-flicking fight: each head fires a different style and you rotate protects through the triple-attack.

The crystals that upgrade boots to their BiS variants are the reason everyone learns this fight.

The fight mechanics

Cerberus alternates melee, ranged, and magic in a readable cycle - each attack has a tell and a matching protection prayer. Pray correctly and the damage disappears; miss a switch and you eat the full style.

The fire pools she summons on the floor punish standing still - keep moving between prayer switches, and never let her corner you against the lava.

The souls

Mid-fight she splits into three souls, each charging a different attack style - kill them in order before they fire, or take the stacked hits. The soul phase is the real damage-check: teams that burn souls quickly never see the big hits.

Gear and inventory

• Protect-from-melee base with fast switches - her melee is the most common.
• Ranged or melee both work; melee with a defender is comfortable.
• Restore pots > food: the fight is prayer management, not chip damage.
• A teleport out - 91 slayer is the gate, not the level check.

The drops

The crystals are the draw: eternal, pegasian, and primordial crystals attach to the infinity, ranger, and dragon boots for their best-in-slot variants. Hellpuppy pet, jar of souls, and the usual supply rolls fill out the table.

The three-headed pattern

Cerberus runs a predictable three-phase rotation: melee attacks, a fire-breath that covers the floor in damaging tiles, and a soul-attack phase where she summons three spirits - each protecting a different style, and each must be prayed against as they converge on you.

The spirits are the exam: read which one is attacking and pray against that style in sequence. Miss the flick and three hits land at once.

Primordial boots and the crystals

The primordial, pegasian, and eternal crystals are the signatures - each upgrades a pair of dragon boots, ranger boots, or infinity boots into the BiS version for its combat style. The crystal drops are rare but the rest of the table keeps the farm profitable between them.

• Protect-from-melee base; flick for the spirits.
• A weapon fast enough to hit between spirit waves.
• Her room is instanced - no interruptions, no help.

The spirit phase timing

The three spirits spawn at fixed health thresholds and each guards one combat style - the order is random per kill. They converge on you slowly, so the play is to pray against the closest spirit first and flick through the sequence as they arrive.

The fire pools she leaves are the positioning hazard - the tiles stay hot for several seconds, so route your spirit-dodging through clean ground.

Notable drops

Tradeable drops link to their live Grand Exchange page.

Item	Quantity	Rarity
Ashes	1	Always
Clue scroll (elite)	1	Very rare
Eternal crystal	1	Very rare
Hellpuppy	1	Very rare
Jar of Souls	1	Very rare
Key master teleport	3	Very rare
Pegasian crystal	1	Very rare
Primordial crystal	1	Very rare
Smouldering stone	1	Very rare
Black d'hide body	1	Uncommon
Blood rune	60	Uncommon
Steel cannonball	50	Uncommon
Grimy torstol	6	Uncommon
Rune 2h sword	1	Uncommon
Rune axe	1	Uncommon
Rune chainbody	1	Uncommon
Rune full helm	1	Uncommon
Rune halberd	1	Uncommon
Rune pickaxe	1	Uncommon
Rune platebody	1	Uncommon
Runite bolts (unf)	40	Uncommon
Runite ore	5	Uncommon
Torstol seed	3	Uncommon
Ashes	50	Common
Battlestaff	6	Common
Coal	120	Common
Coins	10000-20000	Common
Death rune	100	Common
Dragon bones	20	Common
Fire orb	20	Common
Fire rune	300	Common
Lava battlestaff	1	Common
Pure essence	300	Common
Soul rune	100	Common
Summer pie	3	Common
Super restore(4)	2	Common
Uncut diamond	5	Common
Unholy symbol	1	Common
Wine of Zamorak	15	Common

Track these items

Eternal crystalPegasian crystalPrimordial crystalSaradomin's tear

Related bosses guides