Here is the full list of all 14 Zaba The Frog achievements.
Become big enough
Die
Complete all levels of Grassland World
Unlock Caves World
Complete all levels of Caves World
Unlock Sawers World
Complete all levels of Sawers World
Unlock Factory World
Complete all levels of Factory World
Collect all crystals
Collect 5 tokens
Collect all tokens
Finish 5 time trials
Finish all time trials