Great shooter.
I don't really care for a powerup system in games (although it would be nice).The graphics are ok..not much to say there.Style is 6 because I only know of 2 games on newgrounds that actually let you spit blood.Sound 8 because the music on the second level fitted it very well,although the screaming from the fishhead thingys got annoying.Violence 9 because of all the death and blood =/.Interactivity 10,because you move your mouse to control Guy and also to shoot your acid blood.Humor 6 because some parts made me chuckle a bit.
Things that need improvement:Nothing really..cept it would be nice if you could add a change difficulty setting since it was so hard.It would be nice if you could put a shop in this..so you can buy like armor or weapons...that would be cool.Other than that it's a really good piece of flash and I'll be sure to vote a 5.