looking good. but the engine has a few annoying flaws. (Linux build)
trying to push buttons on the wall is a pixel hunt. when the reticle points at a button, it should be able to be pressed.
when turning around (by mouse) too many times, it doesn't turn much more. i can only assume that it happens because the pointer position doesn't get reset and once it reaches the edge of the screen the game doesn't receive any more inputs.
edit: indeed, i have noticed/read the disclaimer only after writing this.