Full list of all 50 Remnant: From the Ashes achievements. It takes around 50-60 hours to unlock all of the achievements in the base game on Windows.
The base game contains 40 achievements, and there are 2 DLC packs containing 10 achievements.
Acquire 200,000 scrap
Acquire 30 traits
Acquire 10 armor sets
Defeat the Ravager
Acquire 15 weapon mods
Return coin to Ace
Acquire 100,000 scrap
Return the Swamp Guardian's heart to the Undying King
Acquire 5 armor sets
Return ring to Reggie
Defeat the Ent
Upgrade any trait to 20
Upgrade any weapon to +20
Defeat the Dreamer
Acquire 20 traits
Meet Andrew Ford
Defeat the Totem Father
Acquire 50,000 scrap
Meet the Pan Rebel Leader
Defeat Ixillis XV
Defeat 100 special enemies
Meet the Swamp Queen
Defeat a world boss in single player without taking damage
Upgrade any weapon to +10
Defeat the Undying King
Acquire 10 traits
Meet the Undying King
Upgrade a boss weapon to 5
Defeat the Claviger
Acquire 5 weapon mods
Craft a weapon using material from a defeated world boss
Meet the Labyrinth Keeper
Defeat Singe
Upgrade Dragon Heart
Upgrade any trait to 10
Meet the Root Mother
Acquire Mudtooth's pocket watch
Activate the Ward 13 World Stone
Upgrade first weapon
Acquire first trait
Defeat 5 Bosses in a row in Survival Mode
Defeat 10 Bosses in a row in Survival Mode
Purchase 15 Armor Skins
Purchase 40 Armor Skins
Defeat the Final Boss
Listen to all the Recordings in Ward Prime