Full list of all 23 Going Under achievements.
The base game contains 20 achievements, and there is 1 DLC pack containing 3 achievements.
Unlock all Skills.
Complete Swomp's "mentorship".
Kill a power loader with the Exit Strategist skill.
Save the World?
Defeat Vested Marv.
Obtain Hustlebones' Share.
Obtain Hover Hands' Share.
Obtain The Caffiend's Share.
Kill a Hungry Box.
Complete Tappi's mentorship.
Complete Kara's mentorship.
Complete Ray's mentorship.
Go under.
Obtain The Grim Ledger.
Complete Fern's mentorship.
Obtain The Toxic Mask.
Get cursed 13 times.
Open 100 delivery cubes.
Obtain The Mana Press.
Meet your coworkers.
Complete The Impostor's final test.
Complete the Rolodex
Win a run in Impostor Mode.