It looks nice, stylish (reminds me, for some reason, Antichamber), but boring.
Nagging:
- the camera is really higher, otherwise the sounds of steps, and we are "lying";
- there is not enough music;
- open the window in full screen mode or in the middle;
- interface sprites are opaque (rectangle is visible);
- on the first level, the second enemy did not react to me, probably, I was too far away (I just shot him).
Good luck in development, if planned =)