Doom of Mokhaiotl: how to defeat it (Ironman guide)
Delve boss in the Ruins of Mokhaiotl (The Final Dawn): every level you descend it gains HP and mechanics, up to 8 (and beyond). Ranged with a Scorching bow or Tbow, demonbane for larvae and shield, and melee only to interrupt its cannon.
⚔ Open in the interactive guide
Doom of Mokhaiotl
- Tier
- Late
- Combat level
- 558
- Style
- Mixed
- Requirements
- The Final Dawn. Increasing depth levels
- Why kill it as an Ironman
- Eye of Ayak (fastest staff), Avernic treads, Mokhaiotl cloth, Dom.
- 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
Delve boss in the Ruins of Mokhaiotl (The Final Dawn): every level you descend it gains HP and mechanics, up to 8 (and beyond). Ranged with a Scorching bow or Tbow, demonbane for larvae and shield, and melee only to interrupt its cannon.
Left icon: what hits you. Right icon: what to pray.
Coloured projectiles
Blue = Protect from Magic, green = Missiles, red = Melee (from level 2). Damage is calculated on impact: pray after it launches. Max 47 (65 at level 8). Next to it: a 40 tongue whip.
Demonic larvae
They drop around you and walk to Doom; if they reach it they heal it (10+) and add a permanent stack. 2 HP: demonbane, multi-hit or the Eye of Ayak one-shot them; from level 4 use the style of their colour. Their 3x3 explosion (21) does not hurt you if it hits Doom.
Rock Throw
A rock that bursts after 7 ticks; shadows mark where the debris lands (15-20). It disables your prayers and fires 1-3 projectiles (normal rock starts ranged, blue starts magic). At level 8 it throws two: pray only after the second.
Special Beam Cannon
Yellow bar: if it fills it hits 60/80/99. Melee charge (it prays Magic and Missiles): only a melee hit interrupts and deals bonus damage (Crystal halberd special). Shield (level 3+, at 75%, 500): demonbane only. Car phase (5+): any attack and everything is 100% accurate: Zaryte crossbow special.
Shockwave
Volatile earth spawns; 20 ticks later the wave hits (30-41 per hit, up to 5 at level 8). Attack 2 orbs (the 1st sets the destination, the 2nd the start) to create an earthen shield and stand inside. Its centre tile clears acid blood.
Acid blood and car phase
From level 3 it sprays acid (venom) when damaged and it carries over between levels (level 6 clears it). From level 5 it burrows and charges at an eye 4 tiles past you; at 6+ it Car Slams, breaking rocks within 15 tiles: use Rockblock with Rock Throw rocks.
Step by step
- After The Final Dawn go in through the ruins' north entrance (Mokhaiotl waystone, Quetzal to Tal Teklan, ancient teleporters). Until 20 delves the death fee is cut 75%.
- Ranged: Scorching bow with elite void or Tbow with Masori. Bring a Darklight and a demonbane-autocast staff for larvae of each colour.
- Levels 1-4: crossbow special on entry, kill larvae, dodge Rock Throw and cut the melee charge with the halberd.
- Level 3+: at 75% the shield appears (500): demonbane only; larvae exploding on it deal 100.
- Level 5+: car phase (special here), then volatile earth: make the shield, survive the wave and repeat as deep as you can.
Key gear
Scorching bow
Void ranger helm
Elite void top
Elite void robe
Necklace of anguish
Ava's assembler
LightbearerTypical inventory
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Darklight · Slayer's staff (e) · Crystal halberd · Ranging potion(4) x2 · Saradomin brew(4) x6 · Super restore(4) x5 · Extended anti-venom+(4)
Ironman tips
- 💡 Elite void performs like Masori with a Scorching bow and costs almost nothing on death. Emberlight raises the death cost for no gain: use Darklight.
- 💡 No thralls and no defence specials: thralls spray lots of acid and its Defence only drops 30 and resets every level.
- 💡 Plugins: Better NPC Highlight (larvae and shielded Doom), Visual Metronome at 20 ticks for the shockwave, Radius Markers for the halberd.
Wiki images and videos
Tap a video to play it. Source: OSRS Wiki (CC BY-NC-SA 3.0).
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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.
Other bosses
Early
BarrowsMagic · cb 98-115ScurriusMelee · cb 200Gemstone 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
VardorvisMelee · cb 784The LeviathanRanged · cb 798The WhispererMagic · cb 791Duke SucellusMelee · cb 768CerberusMelee · cb 318AraxxorMelee · cb 890Alchemical HydraRanged · cb 426The NightmareMelee · cb 814Maggot KingMixed · cb 741NexRanged · cb 1001Chambers of XericMixed · cb RaidTheatre of BloodMixed · cb RaidCorporeal BeastMelee · cb 785Fortis ColosseumMixed · cb Sol Heredit 1600YamaMixed · cb 1238