Damn, wave 15 is very good. You are right, that the first waves are a bit boring and a lot of people complain that the character is too fast for the game, but most of them have not played past wave 10. And there you really need the speed.
Yeah, I know the problem with accidentally picking up health packs. We planned to spawn the health packs over time, but the three in game right now are from testing, because he had not time :D It was also planned to have some sort of powerup after each wave and one of them could have been restore health, but yeha, the time ...
I'm glad you liked the game. Thank you for your feedback.