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