Nice idea/concept, but could do some tweaking.
Very nice idea; who doesn't love the prospect of running around and having the ability to whack tons of zombies, mutants, terrorists, and SWAT all in one game?
Still, the graphics could've been a little smoother. The maps within a series, for instance, don't really have any distinguishing features from others in the series. That, and what is up with all the dead girls on the ground? And uh, why are they naked? Some places I can understand; with terrorists and shit like that. But NCR? And SWAT assaults? Simply put, some of the stuff seems out of place. Maybe they were put there to show the raiders' brutality or something, but it got old quick. Spice up the decor, and less dead naked girls plzkthx. If I wanted to see naked girls, I'd be looking at pr0n, not playing your game.
Sound was another big thing to tweak. Maybe you could have some metal (Blood & Gore/Necromancide come to mind) playing, with of course, the option to turn it off. Voices were kinda lame too. Gun SFX were pretty awesome, however.
Also, the gameplay was kind of messy. In a hostage situation, we should have objectives to recover the hostage safely, or when defending a base, we should have some guys bum-rushing our ass where we fight them off. Moving your sprite to a specific place on the map isn't what I had in mind for base-defense. The weapon system was kind of clunky too; we had such a large array of weapons, but practically nothing to distinguish them from each other other then name. (Sad to say, I'm not a gun buff.) Maybe tone it down. 'Nother thing to add about the gameplay is sight. If a guy has his back to me (completely oblivious), and I'm trying to creep out the door behind him, he should have no reason to do a 180 and shotgun me in the face.
One last thing to note: Have someone proofread what you type. I'm glad that you didn't resort to typing lyke dis and actually seem to make an effort to use grammar, but you messed up in quite a few spots. Just have someone read over it.