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