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Dagannoth Rex fight simulator: kill times in OSRS

Dagannoth Rex takes about 23.9 seconds per kill in OSRS with the best setup, a Tumeken's shadow doing 11.63 DPS at level-99 stats. RuneBuddy's Boss Fight Simulator runs the real phased fight tick by tick, so you get a kill-time spread for your own gear rather than a flat DPS number.

Dagannoth Rex has a scripted fight in RuneBuddy's Boss Fight Simulator: its phases, attack rotation and punish mechanics are modelled tick by tick, so kill time accounts for the downtime a flat DPS figure hides. Open any loadout below to run the fight, or see the best-in-slot gear for Dagannoth Rex.

🔮 Magic Best DPS
Tumeken's shadow Tumeken's shadow
11.63DPS
70Max hit
99.6%Accuracy
23.9sAvg TTK
  • Ancestral hatAncestral hat
  • Imbued guthix capeImbued guthix cape
  • Occult necklaceOccult necklace
  • Rada's blessing 4Rada's blessing 4
  • Tumeken's shadowTumeken's shadow
  • Ancestral robe topAncestral robe top
  • Ancestral robe bottomAncestral robe bottom
  • Confliction gauntletsConfliction gauntlets
  • Avernic treads (et)Avernic treads (et)
  • Magus ringMagus ring
Prayer: Augury Potion: Saturated heart
Open in fight simulator →
🏹 Ranged
Bow of faerdhinen Bow of faerdhinen
3.71DPS
49Max hit
36.3%Accuracy
73.1sAvg TTK
  • Crystal helmCrystal helm
  • Dizana's quiverDizana's quiver
  • Necklace of ruptureNecklace of rupture
  • Bow of faerdhinenBow of faerdhinen
  • Crystal bodyCrystal body
  • Crystal legsCrystal legs
  • Zaryte vambracesZaryte vambraces
  • Avernic treads (max)Avernic treads (max)
  • Venator ringVenator ring
Prayer: Rigour Potion: Ranging potion
Open in fight simulator →
⚔️ Melee
Scythe of vitur Scythe of vitur
3.69DPS
48Max hit
26.3%Accuracy
75.5sAvg TTK
  • Oathplate helmOathplate helm
  • Infernal capeInfernal cape
  • Amulet of rancourAmulet of rancour
  • Rada's blessing 4Rada's blessing 4
  • Scythe of viturScythe of vitur
  • Oathplate chestOathplate chest
  • Oathplate legsOathplate legs
  • Ferocious glovesFerocious gloves
  • Avernic treads (max)Avernic treads (max)
  • Bellator ringBellator ring
Prayer: Piety Potion: Super combat
Open in fight simulator →

Assumes level-99 combat stats and the best relevant prayer and potion, off Slayer task (no Slayer-helmet bonus). DPS is single-target on the boss's base stats; magic setups consider powered staves. Numbers come from RuneBuddy's WASM combat engine, the same one behind the DPS calculator.

Dagannoth Rex kill time FAQ

How long does it take to kill Dagannoth Rex in OSRS?
Dagannoth Rex takes about 23.9 seconds per kill in OSRS with the best setup, a Tumeken's shadow doing 11.63 DPS at level-99 stats. RuneBuddy's Boss Fight Simulator runs the real phased fight tick by tick, so you get a kill-time spread for your own gear rather than a flat DPS number.
What is the fastest setup for Dagannoth Rex?
The fastest kills come from a Tumeken's shadow (11.63 DPS, 99.6% accuracy) with Augury and a saturated heart.
How long does Dagannoth Rex take with melee?
The best melee setup for Dagannoth Rex is a Scythe of vitur, which kills it in about 75.5 seconds per kill at 3.69 DPS.
How long does Dagannoth Rex take with ranged?
The best ranged setup for Dagannoth Rex is a Bow of faerdhinen, which kills it in about 73.1 seconds per kill at 3.71 DPS.
How long does Dagannoth Rex take with magic?
The best magic setup for Dagannoth Rex is a Tumeken's shadow, which kills it in about 23.9 seconds per kill at 11.63 DPS.

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