Here is the full list of all 9 iZBOT achievements.
Squash twenty bats and defeat Bedlor
Collect all the HardToGetiums
Complete level three
Destroy forty collapsible blocks in a single level
Splatter five enemies in under five seconds
Defeat Derpa the Rhino in less than thirty seconds
Complete level two
Defeat the Slime Ball without bouncing on any of his minions
Complete level one