well made.
It has a professional feeling to it for the most part. I really love the gun sounds, they are crisp and clear and sound cool in stereo. The death animations were all pretty cool.
My biggest problem with it was reloading. You couldn't switch to your alternate while you were reloading, which was a pain, especially since it would auto reload once you are out of ammo. That is when you need your alternate weapon the most!
Also, I wouldn't bother changing this on this particular game, but if you were to make a sequel or a similar game, I would try to balance out the whole survivor/finding gun/repair thing. The survivors were fairly useless in combat, and i barely ever had to even repair my wall. Maybe if it was harder, or had harder settings then that whole thing would be useful, but at this point, if you get survivors in the beginning, it makes every thing else too easy in terms of repairing and finding guns. So it was a good idea, but it needs some tweaking for the next game.
Very well made game though, impressive.
-Nils