Here is the full list of all 16 Tiny Hands Adventure achievements.
Defeat Third Boss
Defeat Fourth Boss
Defeat Second Boss
Defeat First Boss
Defeat Fifth Boss
Finish one hard stage
Finish 10 hard stages
Finish all hard stages
Hold 30 lives at same time
Get double shield
Die
Get all 5 crystals in one stage
Use a drill
Use a grabber
Use mechanical arms
Use wooden sticks