I found some bugs in the game while playing. I was using the catapult a lot and one instance of it was stuck on the screen thru out the game from one point onward till the end, even thru the main menu and upgrade screens. It also randomly multiplied itself in the same spot or disappeared for a few seconds before the instance would appear again and multiple. It was killing enemies in its path as well. Also at one point when i used the magnet a lot, a few of the enemy characters would get stuck on the left of the screen without falling down or dying, because of which i could not click on the early finish button. And somehow one of the enemies generated at the very top of the screen above the brush indicator menu. I could only see its legs moving. I'm not sure if it was because of the magnet or not.