Here is the full list of all 11 Orbo's Odyssey achievements.
Complete every time trial, beating the developer ranks.
Complete every time trial, beating the green ranks.
Discover the dev room.
Enjoy Chef Jett's Delicious Special...
Return to nothing at the Monolith.
Collect All Obol Fragments
Knock over every dog in Shlarp City...
Beat the game...?
Defeat S3R.gen...
Finish engineering the prosthetic arm.