Hey! I had a lot of fun here!!! I thought it was pretty good!! and you have a good ear for some kick ass music!!!
I have a suggestion. I notice you asked for higher votes so you could make more levels.
And I also noticed that you have like a dozen "one level only shooters!! So Why don't you take all your shooters and make One EVERCHANGING MULTI-LEVEL BLOWING SHOOTEM FEST!!!! Just make sure you center it under one character!! it would be killer!!