Quality Game. This is what Newgrounds is for.
I have been searching Newgrounds for this kind of quality submission for months. Thank you for satisfying my desire for an excellent game.
The shooting was smooth. The objective, while not being new in any way, was perfectly pulled off with hours to search for people, weapons, and spend to repair your wall. Instead of shooting as many people as you can to try to rack up enough points to earn the next weapon, you have a realistic, not to mention more pleasing, method of obtaining them. Now I can stand in the back of my fort with my hunting rifle, watch the 6 people I have collected pick off people, and snipe to my hearts content. On that note, I thank you for the fast running zombies. The first few levels almost completely removed all my health because of them, making the game a real challenge.
My few issues with this game are that, well firstly that it ended so soon after 20 nights, and that you could not switch weapons while reloading. That is a big strategy of mine, to fire till the gun is empty, switch to my other gun and keep firing until the screen is clear enough to reload both weapons. I was able to live without using this method, but my personal preference is to be able to do that.
Sadly, I was not able to obtain the AK during my play. *sniff* I wish I could have pulled that off, perhaps five more levels would have allowed me to obtain it... and then properly use it to my enjoyment. I feel that because the levels were so few, that I wasn't fully satisfied with the time I used to search for each weapon by enjoying the special features of each gun. The sawn-off shotgun was thrown into my Hitman-like gun shed, and forgotten.
All in all I think your game is amazing, and has a high replay value. In fact, I think I'm going to stop writing this so I may go play again. That AK will be MINE!