Great game in general. After about 20 times I made it to the end scene. A sad story that ends happy.
My arm was getting a little tired from the clicking, maybe an auto-shooting function for the hearts would be nice. Since I just wanna do as much as possible. Tips to get further: The first part was the toughest. It needs about 70 hits in total to win I guess (had 35 + 15 + some more). Combo bonuses seem to replenish health. The sickles deal quite a big amount of damage, other stuff not too much.