Not bad for a first game. A few things: The own healthbar is irritating. Better put it in the HUD. Also the credits must be accessable without clearing the game.
You should ALWAYS mirror the buttons y and z for the qwertz users out here. Also it does not seem very logical that creatures drain a candle and torches refill them.
JUST found these comments! You're not shooting, you're throwing a baseball-sized flare. You have to get close by flying well and taking chances. The story explains a lot. As to the controls, this is 3D flight. WASD just doesn't work.
Please do not publish unfinished prototypes. You can upload the beta/alpha version without publishing and share the link with your testers. Don't clutter the website like this.
Nice sequel. I really liked, that weaker units are replaced by upgraded versions. In the first game it wasannoying when you were stuck with a cheap rifle man and had to send away a strong unit.
You should add music to the game. Also the mouse sensitivity is far to hight. An option for regaining health would be good. The bullets should automatically reload after the player died. And most important: give credit to whom it is due! I assume you did not create the zombies or the textures yourself. Unless you bought the rights to use them comercially, you are most likely obliged to credit the author. Even if this is an alpha version, it is technically published since it can be accessed by everybody.
@SakuraiTomoki: People rate your comments low because bragging does not belong into the comments, like stated in the guidelines to commenting: http://www.kongregate.com/forums/1/topics/64167?page=2#posts-1451409 . If anyone cares about other people's score, they can easily look at the scores tab right of the game.
Thanks for the feedback! more weapons would be awesome