Risk of Rain 2: Alloyed Collective (AppID: 2781620)

Bring your friends on the adventure! Only one player is required to own Alloyed Collective to enable the monsters, stages, and items to appear in-game for the whole lobby. Players without Alloyed Collective will be unable to select the two new survivors or permanently unlock new items, logbooks, or other content. 

• Explore 6 All-New Stages — From cliffside scrapyards to machinery-choked fortresses and buried caverns, each biome pushes deeper into Solus territory with dynamic layouts and environmental threats. 

• Master 2 Survivors — One returns. One debuts. Both are built to survive the escalating storm. 

• Command 7 Drones — New drone types let you augment your playstyle with some wild abilities. With the help of a new station, you can even modify your drones to suit your needs. 

• Fight 7 Enemies — The Solus have been gathering — and building — and planning. Now their creations are hunting you. 

• Challenge Massive Bosses — Face a brutal new Teleporter encounter — and a final boss that reshapes the endgame. 

• Loot 15 New Items — Expand your arsenal with a new haul of mislaid UES property. 

The Solus Units were never meant to survive. Betrayed and abandoned, they were lost to an unspeakable corruption. Today, those that remain rise from the scrap heaps that once were their allies to seize a future that was stolen from them. Their continued struggle driven by a singular purpose: returning home.   

Stages

From crumbling cliffs to scorching deserts and buried machine caverns, Alloyed Collective drags you deeper into Solus territory — where every step forward means trespassing further into something you were never meant to see. 

Pretender’s Precipice 

Ash howls across the ledges of this fractured cliffside, where broken Solus tech and twisted metal experiments litter the ground. Duck through narrow nests and detour into the massive, hollowed-out corpse of a fallen Solus — a rusting maze of tunnels and elevation where danger hides just out of view. 

Iron Alluvium 

This desert mining outpost has a habit of reminding you that it was built for machines, not human interlopers. One hulking drill grinds deeper into the heart of Petrichor V. Survive and be rewarded with loot scattered through winding caves where iron veins once ran. 

Repurposed Crater 

A massive crater turned industrial stronghold. Some of the most powerful Solus reside here. They now oversee the construction rigs, scaffolding, and solar arrays that are building their future. This is a fortress in progress — and you're here to interrupt. 

Conduit Canyon 

Break through a narrow canyon choked with live conduits and machine infrastructure. Power lines pulse through the walls, guiding cargo and energy to deeper zones. Hold your ground in close quarters fights as you push through this critical choke point. Succeed, and uncover access to the planet’s core.