Accursed sceptre
Ancestral hat
Imbued guthix cape
Occult necklace
Rada's blessing 4
Accursed sceptre
Ancestral robe top
Elidinis' ward (f)
Ancestral robe bottom
Confliction gauntlets
Avernic treads (et)
Magus ring
Beta
All bosses
Open the Calculator
Callisto takes about 84.2 seconds per kill in OSRS with the best setup, a Accursed sceptre doing 12.12 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.
Callisto 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 Callisto.
Accursed sceptre
Ancestral hat
Imbued guthix cape
Occult necklace
Rada's blessing 4
Accursed sceptre
Ancestral robe top
Elidinis' ward (f)
Ancestral robe bottom
Confliction gauntlets
Avernic treads (et)
Magus ring
Webweaver bow
Masori mask (f)
Dizana's quiver
Necklace of rupture
Webweaver bow
Masori body (f)
Masori chaps (f)
Zaryte vambraces
Avernic treads (max)
Venator ring
Ursine chainmace
Inquisitor's great helm
Infernal cape
Amulet of rancour
Rada's blessing 4
Ursine chainmace
Inquisitor's hauberk
Avernic defender
Inquisitor's plateskirt
Ferocious gloves
Avernic treads (max)
Ultor ringAssumes 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.