The game has 53 Steam achievements. Below is the verified subset captured from the official Steam community listing; the remaining entries (progression, ending and secret achievements) will be added with spoiler warnings as they are catalogued.
| Achievement | Requirement |
|---|---|
| Home at Last | Reach Marrowkeep |
| Shell of a Man | Acquire your first Shell |
| Mid Summer? | Explore The Festival |
| Seeking the Past | Watch all Shell Memories |
| Stoned | Find all Tarstones |
| Bring My Ova Back to Me | Collect all of the Ova |
| Sat Nav | Find all Map Fragments |
| So Fresh, So Clean | Cleanse All Beacons |
| Heavy Metal | Play all Lute Tracks in the Game |
| Deep Cuts | Unlock the Axe and Dagger |
| Cut You Down to Size | Unlock the Veteran's Battle Axe |
| Chop Chop | Unlock the Salvaged Trebuchaxe |
| Dual Wielding | Unlock the Axatana |
| Big Boi | Unlock the Great Martyr's Blade |
| Stop - Hammer Time | Unlock the Obsidian Hammer |
| Like Clockwork | Unlock the Clockwork Scythe |
| Spiked | Unlock the Caged Hystrix |
| Old School | Unlock the Forgotten Crossbow |
| Old Painless | Unlock the Triarch Repeater |
| Point Taken | Unlock the Black Needle |
| Speared | Unlock the Ballistazooka |
| Beautiful Baby | Unlock the Cursed Child |
Missables to watch
- Tar Golem zero-health feat — tied to the first major boss; know the condition before the fight.
- Collectible achievements (Tarstones, Ova, Map Fragments, Beacons, Shell Memories, Lute Tracks) are easiest tracked live via the achievement counter.