Full list of all 118 Risk of Rain 2 achievements. It takes around 200 hours to unlock all of the achievements in the base game on Windows.
The base game contains 103 achievements, and there are 2 DLC packs containing 15 achievements.
As Mercenary, complete a Prismatic Trial without falling below 100% health.
As Acrid, beat the game or obliterate on Monsoon.
As Acrid, inflict Poison 1000 total times.
As REX, beat the game or obliterate on Monsoon.
As REX, kill a Clay Dunestrider on Abandoned Aqueduct by throwing it into a pit.
As Mercenary, beat the game or obliterate on Monsoon.
As Captain, beat the game or obliterate on Monsoon.
As Captain, repair and recruit a TC-280 Prototype.
As Captain, visit 10 different environments in a single run.
As MUL-T, beat the game or obliterate on Monsoon.
Complete the Trial of Soul.
Complete the Trial of Frailty.
Complete the Trial of Chaos.
As Engineer, beat the game or obliterate on Monsoon.
Complete the Trial of Death.
As Artificer, beat the game or obliterate on Monsoon.
As Artificer, fully defeat the teleporter boss in a one-second burst of damage.
Complete the Trial of Metamorphosis.
Complete the Trial of Kin.
As REX, complete an entire teleporter event while under 50% health.
Beat the game on Monsoon difficulty.
Complete the Trial of Glass.
Complete the Trial of Evolution.
As Acrid, land the final blow on a Scavenger.
As Acrid, land the killing blow on 50 total enemies that have 1 hit point left.
As Mercenary, don't touch the ground for 30 seconds.
As Loader, beat the game or obliterate on Monsoon.
Complete the Trial of Dissonance.
Complete the Trial of Vengeance.
Complete the Trial of Spite.
As Artificer, kill 15 enemies before touching the ground.
As Artificer, perform a multikill of 20 enemies.
Complete the Trial of Enigma.
As Engineer, recruit 12 minions at one time.
As Engineer, defeat the teleporter boss in less than 5 seconds after it spawns.
As Engineer, finish charging the teleporter with zero monsters remaining on the stage.
Beat the game.
Discover and activate 8 unique Newt Altars.
Kill 20 Hermit Crabs by chasing them off the edge of the map.
Complete the Trial of Sacrifice.
As Loader, reach and proceed through the Celestial Portal in 25 minutes or less.
Repair the broken robot with an Escape Pod's Fuel Array.
Carry 5 Lunar items in a single run.
Defeat an Elite boss on Monsoon difficulty.
As MUL-T, land the killing blow on an Imp Overlord with the Preon Accumulator.
Reach +300% movespeed (includes sprinting).
As MUL-T, defeat two Beetle Queens without leaving the teleporter zone.
Stabilize the Cell in the Void Fields.
As Huntress, beat the game or obliterate on Monsoon.
Reach +200% attack speed.
As Huntress, collect and carry 12 Crowbars at once.
As Huntress, start and finish either Rallypoint Delta or Scorched Acres without falling below 100% health.
Complete a Prismatic Trial.
As Loader, land a Charged Gauntlet hit at 300mph or higher.
As Commando, beat the game or obliterate on Monsoon.
Free the survivor suspended in time.
As Commando, clear 20 stages in a single run without picking up any Lunar items.
Complete 20 stages in a single run.
Activate 6 turrets in a single run.
As Commando, land the killing blow on an Overloading Worm.
Kill 15 boss monsters in a single run.
Destroy 20 flying rocks in Sky Meadow.
Defeat the unique guardian of Siren's Call.
Charge the Teleporter with less than 10% health.
Repair 30 drones or turrets.
Die three times while burning.
Die 20 times.
Defeat the unique guardian of Gilded Coast without any beacons deactivating.
Complete the Trial of Swarms.
Defeat the Teleporter bosses after activating 2 Shrines of the Mountain.
Complete 3 Combat Shrines in a single stage.
Kill 15 enemies simultaneously.
Defeat 500 elite monsters.
Fail the Shrine of Chance 3 times in a row.
Collect 10 Monster or Environment Logs.
As Commando, fully charge the first-stage teleporter before the timer hits 5 minutes.
Fully charge a Teleporter without getting hit.
Defeat 3000 enemies.
Fully upgrade a Shrine of the Woods.
Complete 30 stages.
Find the Altar to N'kuhana.
Complete the Trial of Command.
Duplicate the same item 7 times in a row with a 3D Printer.
Discover the hidden chamber in the Abandoned Aqueduct.
Pick up 5 different types of Equipment.
Complete the first Teleporter event 5 times.
Die 5 times.
Obliterate yourself at the Obelisk..
Collect $30,480 total gold.
Loop back to the first stage.
Complete the Trial of Honor.
Discover and enter three unique portals.
In 4 consecutive stages don’t leave the teleporter radius until it is fully charged.
Without healing, reach and complete the 3rd Teleporter event.
As Huntress, land a killing blow with every possible hit of a single glaive.
Stay alive for 30 consecutive minutes.
Deal 5000 damage in one shot.
Defeat the Teleporter boss under 15 seconds.
Reach and complete the 3rd Teleporter event without dying.
Open the Timed Security Chest on Rallypoint Delta.
Complete a Teleporter event.
Discover 10 unique white items.
Defeat an Elite-type monster.
As Captain, kill the final boss using a Supply Beacon
As Bandit, kill a monster with 20 stacks of Hemorrhage.
As Loader, kill three other Loaders in the Bulwark's Ambry.
As MUL-T, clear the Void Fields on Stage 7 or later.
As REX, heal for 1000 health at once.
As Bandit, kill the final boss with 'Lights Out'.
As Bandit, beat the game or obliterate on Monsoon.
As Bandit, successfully use 'Lights Out' to reset your cooldowns 15 times in a row.
As Mercenary, use 20 abilities in 10 seconds.
As 「V??oid Fiend』, beat the game or obliterate on Monsoon.
As Railgunner, beat the game or obliterate on Monsoon.
As Railgunner, deal 1,000,000 damage in one shot.
As Railgunner, fire 30 consecutive sniper shots without missing a Weak Point.
As Railgunner, get 3 kills with a single Supercharge shot while airborne.
Escape the Planetarium or complete wave 50 in Simulacrum.