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

// at a glance

At a glance.

In-game title	Incomplete Prototype
Type	Teleporter boss
Expansion	Alloyed Collective
Health	3000 (+900 per level)
Base damage	15 (+3 per level)
Armour	20
Where it spawns	Stage 3: Iron Alluvium, Iron Auroras · Stage 4: Conduit Canyon, Repurposed Crater.

// attacks

Solus Amalgamator attacks and how to dodge them.

Flamethrower

A 4 s stream of fire that can burn you. It loses it below 75% health.

How to dodge it: Step sideways out of the stream.

Homing Purple Orbs

Fires 4 slow homing orbs that hit very hard. It loses them below 50%.

How to dodge it: Break them from range (75 health): they still explode.

Melee explosion

Explodes at close range for huge damage.

How to dodge it: Do not stay right next to it.

Groundstrike

Marks a spot on the ground that slows you and then explodes very hard.

How to dodge it: Leave the mark as soon as you see it.

// 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: Functional Coupler.

Functional Coupler

You carry one more equipment and switch between them. Each extra one, another slot.

Stacking: No limit: each copy, one more equipment.

Watch out: If you lose it, you drop every equipment except the active one.

// tips

Tips to beat it.

At 75%, 50% and 25% health it drops pieces (a scorcher, two breakers and three probes) that keep attacking: bring area damage.

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// faq

FAQ.

What does Solus Amalgamator 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: Functional Coupler.

Where does Solus Amalgamator spawn?

Stage 3: Iron Alluvium, Iron Auroras · Stage 4: Conduit Canyon, Repurposed Crater.

How much health does Solus Amalgamator have?

3000 base health, plus 900 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).