I like the atmosphere and graphics, it is kind of stylish, too. I like your game, so please take this as positive critique, if possible :-)
- everything is too small and located at some weird screen position, I believe everything should be at least little bigger and placed always in the center of the screen
- in story mode, it's not very clear what to do and where to go
- in survival mode, I guess your goal is to survive, but it's not clear how to shoot or even move (in description you say it's arrows, but it's actually WASD, after some 5 or more minutes with your game, I still don't know how to shoot)
- some walls look like floor and vice versa, I keep running against walls and because everything is so small, it always takes time to realize (impenetrable tiles should be more distinct so player can immediately see where he can go and where not)