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