This one was really fun! Beautiful graphics, catchy music, responsive controls, simple interface.
I did encounter a couple of bugs:
1) During the tutorial, at one point I couldn't put down the baby. I was able to carry a tool in addition to the baby, but I could not put the baby down, and enemies could just steal it from me.
2) A couple of times, the game kicked me out of a level and back to the main menu. This happened to me in both level 2 and level 3, and both times in between waves.