Here is the full list of all 10 ibb & obb achievements. It takes around 10-12 hours to unlock all of the achievements on Windows.
Get the highest possible score on all levels.
Collect all hidden crystals.
Visit all regular and secret levels.
Make it to the party at the end of the game.
Find ubb and make him king.
Bounce a Fin back and forth 10 times.
Finish a level without dying.
Collect a hidden crystal.
Get the highest possible score on a level.
Fall through six different warps without landing.