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