Full list of all 21 Project Liminal Redux achievements.
The base game contains 9 achievements, and there are 2 DLC packs containing 12 achievements.
Launch "Project Liminal Redux"
Fall into liminality
Find the door code and get into the "lazy river"
Walk through the lazy river and enter the door for the staff
Escape from the shower
Go through a dead mall
Discover the password to the door in the store
Find the Developer Room password
Go through "Project Liminal Redux"
Walk through Neon Paradise
Kick any physical object
Take a rest on a bench or lounger