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