Scurrius: how to defeat it (Ironman guide)
Giant rat in Varrock Sewers with 3 phases. Protect from Melee until 30% HP, dodge the rubble and kill the rats with a rat bone weapon. The private instance is free and weaker.
⚔ Open in the interactive guide
Scurrius

- Tier
- Early
- Combat level
- 200
- Style
- Melee
- Requirements
- None. Varrock Sewers. Combat 40+
- Why kill it as an Ironman
- Excellent combat xp (rat bones for Prayer). Rat bone weapons.
- Loot
- The live drop table (wiki rates) and the drop simulator are in the app. ⚔ Open in the interactive guide
Mechanics: what hits you and what to pray
Giant rat in Varrock Sewers with 3 phases. Protect from Melee until 30% HP, dodge the rubble and kill the rats with a rat bone weapon. The private instance is free and weaker.
Left icon: what hits you. Right icon: what to pray.
Tail swipe
His fastest, most accurate attack, up to 13. Protect from Melee in phases 1 and 2.
Bolts of electricity
Up to 8 solo, inaccurate. Switch to Protect from Magic only once he stops using melee.
Flying fur
Up to 7 solo, inaccurate.
Falling bricks
He jumps and rubble falls: one piece always targets your tile. Step off the shadow or take 15-22.
Giant rats
He screeches and 6 rats appear, hitting 0-1 through prayer. One hit kills; no attack delay with a rat bone weapon.
Food pile healing
At 80% he goes to a Food Pile and heals 5-10 several times. There he only uses magic and ranged.
Step by step
- Sewer east of Varrock Palace, through the Broken bars. Right-click: create an instance (free, 500 HP).
- Phase 1: Protect from Melee and attack. Dodge the rubble.
- Phase 2 (80%): he goes to the Food Pile. Pray against magic or ranged while he eats. Kill the rats.
- Phase 3 (30%): centre, magic and ranged only, chained rubble. Watch the shadows and move.
- Once Scurrius is dead, kill the remaining rats: they stop you healing at the Food Pile.
Key gear
Typical inventory
Super combat potion(4) · Prayer potion(4) x3 · Cooked karambwan x12 · Dragon dagger · Bronze knife x50 · Varrock teleport (tablet)
Ironman tips
- 💡 Without a rat bone weapon, knives or darts for the rats. Cannon not allowed.
- 💡 The Food Pile heals you to full once every 10 min out of combat. The better you dodge, swap food for prayer potions.
Wiki images and videos
Guide summarised from the OSRS Wiki strategies (CC BY-NC-SA 3.0). Icons and images: OSRS Wiki. In the app: live drop table, drop simulator, map and Set builder with this boss as target.
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Early
BarrowsMagic · cb 98-115Gemstone CrabMixed · cb 1Giant MoleMelee · cb 230OborMelee · cb 106BryophytaMelee · cb 128SarachnisMelee · cb 318Moons of PerilMixed · cb 329Royal TitansMixed · cb 350AmoxliatlMelee · cb 263HesporiMelee · cb 284SkotizoMelee · cb 321TzTok-JadRanged · cb 702Dagannoth RexMagic · cb 303
Mid
The GauntletMixed · cb 674 / 894ZulrahMixed · cb 725VorkathRanged · cb 732The HueycoatlMixed · cb 642Demonic gorillaMixed · cb 275Tormented DemonMixed · cb 450Phantom MuspahMixed · cb 741KrakenMagic · cb 291General GraardorMelee · cb 624Kree'arraRanged · cb 580Commander ZilyanaRanged · cb 596K'ril TsutsarothMelee · cb 650Dagannoth KingsMixed · cb 303Kalphite QueenMixed · cb 333King Black DragonRanged · cb 276Grotesque GuardiansMelee · cb 248 / 228Shellbane gryphonMelee · cb 340Abyssal SireMelee · cb 350Thermonuclear smoke devilMelee · cb 301ZalcanoMixed · cb 336CallistoMixed · cb 470Tombs of AmascutMixed · cb Raid
Late
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