I ove this game!!
Okay, first let me tell you that if I'd have to judge your game based on how long you can play it on Newgrounds, then I'd probably give you a score around 6/10 or maybe even below that. That's why I went to fingertime.com to check out the "unlimited" version of the game.
Let me start by saying that if you remove the unlimited part from this game, it becomes no fun at all... it seems to lack a story, some background information and a description of what to do in the game.
But if you add the unlimited to this game, it becomes one of the best games i've played on newgrounds.
It doesn't need a story og background info, all you need to know is your score, and then you'll be allright ;)
I actually love this kind of game where it's not that necessary with a whole lot of information... The only info that I would've liked you to add, is what it takes to upgrade your lasers... I'm not quite sure if it's the score, the number of enemies (and if it's enemies, does that stuff they drop upon death count towards upgrading your weapon too), or if it's the number of waves you've survived so far :S
Anyways, this is a great game and I'd like to see more like these in the future ^^