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