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