I think this is a really fun game. I actually enjoyed the silly rush I got :D

This game is so cool xd

First newgrounds game I ever took the time to finish. I loved it!

This game is pretty fun and funny! I like it, so I'll give you some constructive criticism:

It would be better if the game was a little more challenging, and there was a greater variety of enemies. A reload animation would be a nice detail. The perspective was a little weird, like you couldn't walk in front of a tree if part of your head was touching it. Sometimes you can see an enemy before they aggro (start to come after you), and they won't attack you even if you start shooting them. I also noticed you can shoot enemies that aren't even on screen. Right at the beginning of level 2 of the tomb I noticed a zombie walk through a wall. There were a lot of boxes and coffins to shoot, so it'd be nice if they had speed or damage upgrades, power ups, armour, or even ghosts inside instead of just health packs. The enemies were a little slow, and could all easily be outrun. There should be a different sound effect when you should an enemy and when you shoot a box. The message "Red hallpass acquired" didn't go away.

I know it seems like a lot of suggestions, but I'm trying to be helpful, not be a dick. I liked the game! The music was cool, and the gameplay was fun, even though it got repetitive. I liked the boss and the last mission. Keep improving man, I'll be looking out for your next game!