Nice little submission, definitely one of the most polished ones, I definitely had fun playing this. Though after some time the "bad bullets" gimmick gets pretty much nullified due to how many other bullets you have, by wave 10 I hardly saw any red one. Also, it may be just my issue, but god damn was the tutorial guy annoying. I felt like I was sitting in a lecture of a professor who had no idea what he was talking about or was speaking publicly for the first time in his life. So much unnecessary stuttering. By the time he was done explaining enemies I just refreshed the game's page just to skip the rest of it and from what I can see I fortunately didn't miss much.
But overral the game was pretty solid.
Keep up the good work!