Well to start off, I'd like to mention that this game reminded me of Jazz Jackrabbit (An Old DOS Platformer from Epic MegaGames), the cutscenes, the music, it had a familiar feel.
But, Anyway, I love the music, the fidelity of gameplay. The differences between guns could have been emphasized more, but even without the variety, I give it a 9/10. I'd like the idea of a story that wasn't actually a real story, it's no new, but I like it everywhere (until it's not overused).
Overall, great game, guys. Hope to see more Berzerk Studio productions! :)