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