A game I'm working on

well,
It’s a shooting game I’m currently working on,
it’s not complete and it still has a few bugs.

[edited]

Controls Are :
Ctrl - Load ONE bullet into the magazine
Space - Toggle between high quality and low quality
ESC - return to main menu.

Please write any comments you have in mind, suggestions etc.
( for example, I’d like to know how to optimize the game to stop lagging )

Thanks…