Full list of all 20 Chasm achievements worth 1,000 gamerscore. It takes around 15-20 hours to unlock all of the achievements on Xbox One.
Defeat 100 enemies.
Defeat the Wendigo.
Defeat the Bone Worm.
Defeat the Titan.
Defeat King Trell.
Defeat the Shaman.
Defeat 1,000 enemies.
Spend 5,000 gold.
Find all the Journal Entries in the game.
Find all the Powerups in the game.
Break all the crates in the game.
Complete the game on Hard difficulty.
Complete the game as a Mortal.
Become the Arena champion.
Rescue all the missing villagers.
Complete all villager sidequests.
Explore 100% of the map.
Unlock all the Bestiary entries.
Defeat a boss without getting hit.