Great game
This is probably the best flash shooter I have played in a long, long time. The offscreen enemies firing at you made it so you had to progress through the level slowly, checking the path ahead, so it was like a tactical shooter. The big grey robot things were kinda cool, although there'd be clusters of like 4 of them which was kind of lame.
The friendly fire was another great touch, I loved that. Lob in a grenade, take cover, kill half of them and then the other half kill each other. Kept me very entertained.
The ability to save would be nice I guess, but meh.
The gravity was also a bit weird, jumping was whack, I think maybe you should fix that a bit.
The weapons were nice, good variety, although after I got the rocket launcher, I used that a lot.
The menus... left a bit to desire. I'd say change the text color, sometimes I couldn't tell if things were locked on unlocked. Maybe have locked grey and unlocked white, I dunno.
Still, a great game. 5/5 man.