on endless after like round 30 the guns wont fire but the badguys can still attack.its a pretty bad glitch since all your guns dont work for 10 seconds
If there is a 5th it would be cool to be able to have multiple slots filled with one unit, like one goblin unit under one hero and another goblin unit under the other hero, so that way you could have more customizeability if thats a word. Also a mute button so i can listen to pandora and play, and maybe a few more boss levels like the bomb and goblin ones. But anyways good game. 4/5