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