On the off chance you visit Newgrounds again, I'll leave this comment:
- I can't pick up a weapon; the keys "page up", "page down", and "end" are not on my computer. It's always a good idea to create a menu option that allows players to change the controls of each action or at least assign each action to more than one key.
- Adding AWSD as a movement option would be a good idea.
- Whether or not the bad guys die when you hit them seems random (though I'm never able to kill one that has noticed me). When they didn't die, they'd just stand there and wouldn't move.
- There was no animation for enemy guns shooting and no indication I was losing health other than a quiet sound and the small health bar in the corner going down.
- When doing the first mission, I got sent back to the beginning for failing the c4 part. That's kind of harsh.
- I can't say whether or not the graphic have been ripped off, but they look okay, especially for when this was made.
- The sound effect could use more work and should be increased in volume (it shouldn't sound like the music is drowning them out).
I actually would like to see this fixed so I could play. I wish you luck in whatever you are doing now.