Good but very buggy.
I like the concept but you have a lot of bugs. One is that when you start the game over you keep all the weapons you have found unless you clear out the cookies. The second is that occasionally you lose the ability to equip different weapons. Third is the fact that after each day you seem to get a random number of hours (between 9 and 12) to upgrade and repair. The timing of this is inconsistent so I don't think this is a game mechanic. If it is then you might consider mentioning it in some way pertinent to the story, such as some night attacks being longer or shorter than others. Last but not least is the horrible slow down when you have alot of enemies on screen. The slow down was so bad that it took about 5 seconds for their damage to appear on my barrier.
I applaud the innovation in the use of werewolves instead of zombies, and the graphics are fairly well done, especially the weapons. All you would really have to do is fix these bugs and I think this game could rank up there with The Last Stand. A sequel with more content could possibly surpass it.