Yay! I finished the game! It's pretty fun ^^.
I think you should add some sounds to improve the game feel (sounds when you kill a sheep, mine crystals or chop down a tree). Also it lacks a sense of evolution, we aren't faster when we have legs, having arms doesn't have impact on the game, etc. Finally, it lacks some monsters or traps to add difficulty to the game, for now we can just kill sheeps (I felt like a monster xD) and win without more challenge.