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