Here is the full list of all 17 PSYCRON achievements.
Get 50% of all items.
Collect every item.
Skip one item and finish the game.
Find the skeleton.
Take a nap.
Defeat the Security Drone.
Defeat Noemi.
Defeat Dexter?
Defeat Dexter.
Defeat PSYCRON.
Escape PSYCRON.
Escape PSYCRON again.
Escape the Stasis Bay.
Escape the station.
Beat the game real fast.
Beat the game faster than one of the developers.
Beat the game faster than the other developer.