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