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