Nice game, well programmed.
I had a lot of fun playing this. The weapons were varied, the gameplay was fun, and the CPU on hard mode is quite difficult. Also, I like the good variety of medals - still working on Godly Killer. Despite the undeniable fun this game is, the gametypes were a little "narrow", if you now what I mean, and the mission modes didn't really have an involving story. If a sequel IS on the way (and I sincerely hope there is), a few ideas for you -
-Add more gametypes (maybe take ideas from Halo or Call of Duty).
-Make the story mode more... story based.
-Add online play if possible.
-Make the map creation more simple (paths are way too difficult to do all the time)
But, overall, a very fun game with very fun gameplay. Nice job, bro!