Shruum in Risk of Rain 2: attacks and how to beat it

// at a glance

At a glance.

In-game title	Fungal King
Type	Teleporter boss
Expansion	Hallowed Concepts
Health	2800 (+840 per level)
Base damage	7 (+1.4 per level)
Armour	20
Where it spawns	Stage 3: Damp Caverns, Tenebrous Quagmire · Stage 4: Abyssal Depths, Lurid Basilica, Sundered Grove · Stage 5: Helminth Hatchery.

// attacks

Shruum attacks and how to dodge them.

Proliferate

A very strong head smash with a spore cloud; it knocks you back and fires mushrooms that leave stunning puddles.

How to dodge it: Do not stay against its cap and do not step in the puddles.

Mycelium Cage

It predicts where you will be and raises a ring of 12 mushroom walls that explode.

How to dodge it: Change direction when you see the mark. The walls break (120 health) if you get caught inside.

Regrowth

It burrows, comes up under you, floats and slams down hitting within 20 m.

How to dodge it: When the mark appears, run far away: you have 1.5 s before it lands.

// loot

What it drops.

When it is the teleporter boss, each green item it drops has a 15% chance to be its boss item instead: Mycelium Cap.

Mycelium Cap

No fall damage, and landing hard releases damaging spore clouds. Each extra one, more damage.

Stacking: Each copy adds the same, no cap.

Watch out: It cancels all fall damage. Clouds only spawn if the fall would have hurt.

// tips

Tips to beat it.

The mushrooms it plants (up to 8) grow and after 13 s become Mini Mushrums: break them early.
Its cap hurts on contact.

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// faq

FAQ.

What does Shruum drop in Risk of Rain 2?

When it is the teleporter boss, each green item it drops has a 15% chance to be its boss item instead: Mycelium Cap.

Where does Shruum spawn?

Stage 3: Damp Caverns, Tenebrous Quagmire · Stage 4: Abyssal Depths, Lurid Basilica, Sundered Grove · Stage 5: Helminth Hatchery.

How much health does Shruum have?

2800 base health, plus 840 per enemy level. Armour: 20.

// more bosses

Other bosses.

All bosses

Sources: the Risk of Rain 2 wiki (each boss page and Module:Enemies/Data, read on 31 October 2026) and the game's own text. The explanations are our own. Icons: Risk of Rain 2 (Hopoo Games / Gearbox).