I like it
I like the upgrades and such, though it seems to get maybe a bit easy once you start getting much better weapons, but then again that's how a game should be, you deserve to be overpowered when you've advanced, haha, the only dislike I have with the game is it seems the hitboxes for the enemies (specifically the bigger ones) is kind of..iffy to me. But other than that =) great.
Good game
I found one problem with it. It seems too stick when moving. As in if I go to go right, it wont stop going in that direction and when you get control back it doesn't last for long. I was playing level 4 and i had hardly any control, just ended going up and down trying to get back within the play area before getting timed out. Other than that though it is a good game and would be better with the control fix :]