A very well done time waster
I agree that this game is a time waster, but it can also be a very good de-stress-er (if that is a real word...). I like how there is limits on the weapons. It's almost like a built-in block to stop people from beaten the game by cheesing it (using same, over-powered weapon over and over again).
However, I think that the waves get to fast to soon. I understand that this is apart of that difficulty, but by the 6th wave I was have trouble. It could be that I'm not so good with these games, but most of all the other wave games I've play don't really get to fast until the 10th wave. Maybe you (the creators) wanted something a bit more of a challenge, but this is just what I have notice in other wave games.
Aside from that the art is beautiful, the game play is wonderful, and the idea is rich with uniquest. You should give yourselves a pat on the back and have a drink of eggnog (it's Christmas). You should all do another game together sometime. I'm sure that Newgrounds will enjoy it as much as this one :)
Merry Christmas/Holidays and happy New Years!