It's pretty good.
First off, I didn't know to give you seven or eight. Eight seemed high and seven seemed low. So. 7 1/2 it is.
It's a pretty good game, but it just isn't my kinda game. I mean, it'd be a bit more fun, but the controls seem kinda iffy to me, or I just didn't spend enough time in the game. I'd like the Up arrow key or space to jump. It would save a lot of frustration for me. And, just to me, it kinda' got repetitive quick. The new weapons weren't all that imperative, because by the time I was able to unlock a new weapon, my pistol had already upgraded beyond the new weapon's capabilities.
So, decent game, not my style it is.