Full list of all 60 Remnant II achievements. It takes around 60-80 hours to unlock all of the achievements in the base game on Windows.
The base game contains 50 achievements, and there are 2 DLC packs containing 10 achievements.
Acquire 30 Guns
Defeat 25 Aberrations
Craft an Item at the Blood Moon Altar
Acquire 15 Guns
Craft 15 Weapon Mods
Acquire 20 Melee Weapons
Acquire 10 Relics
Defeat Guardian of N'Erud
Upgrade a Standard Weapon to +20
Acquire a World Boss's Alternate Reward
Obtain 10 Traits
Acquire 100,000 Scrap
Acquire 10 Melee Weapons
Defeat the Ravager
Upgrade a Boss Weapon to +10
Acquire the Max Number of Trait Points
Listen to All of Mudtooth's Stories
Discover Leto's Stash
Upgrade a Weapon Mutator to +10
Acquire 50,000 Scrap
Receive an Alignment Reading from Meidra
Discover a Blood Moon Room
Defeat a Boss in Single-Player Without Taking Any Damage
Meet the Custodian
Defeat 10 Aberrations
Obtain a Secret Archetype
Defeat the Final Boss
Defeat Tal'Ratha
Defeat Many Faces
Slot a Second Archetype
Reach Level 10 on Any Archetype
Defeat 100 Special Enemies
Upgrade a Standard Weapon to +10
Upgrade a Boss Weapon to +5
Meet the Flautist
Defeat the Labyrinth Boss
Obtain a Non-Starter Trait
Craft a Boss Weapon
Defeat the Nightweaver
Defeat a World Boss
Upgrade Any Trait to 10
Upgrade Relic Capacity
Craft a Non-Starter Weapon Mod
Obtain an Item From the Nightweaver's Web
Meet Nimue
Choose Your First Archetype
Defeat the Root Mantis
Defeat the Fae Imposter
Acquire 20 traits
Play a Secret Song on the Water Harp