Full list of all 20 ilomilo plus (Windows) achievements worth 200 gamerscore. It takes around 15-20 hours to unlock all of the achievements on Windows.
Helped find all 10 floating eggs with the fly while playing cooperatively
Completed the level "playroom" in Playroom Escapade in less than 200 steps
Completed all bonus levels
Experienced all memories
Walked 70 steps in a row with the same mimic attached
Collected all yellow safkas
Turned one cube into three, using only two mirror cubes
Fully loaded piccolo
Unlocked Playroom Escapade
Ate all the apples on Apple Mayhem
Completed the game
Defeated a Nabber in the same move as you completed a level
Played ilomilo shuffle
Advanced to chapter 4
Improved the score on a level
Advanced to chapter 3
Advanced to chapter 2
Collected one safka of each color
Completed the tutorial
Completed a level