More Days,More Zombies

COntrols:
-W and S to move
-Use mouse to look 
-Left Mouse Button To Shoot

Description:
-You have to survive for more days to meet more zombies.
-The more you shoot your damage will decrease but fire rate will increase

Note :Game may be laggy or buggy so please dont mind.

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I am new to game development so this is my first Ludum Dare and first game i have completed (kind of) . I am  learning many things by developing games.

Game size is too large so give me some tips on how can i reduce game size.