Hi, gave your game another try and I wanted to leave a some feedback if you were looking for it! :)
The large beginning area gave a great first impression of a large area to explore, but I ended up a little lost and I wasn't sure what the objective was. Running and the camera work feels somewhat smooth, but aiming with the gun out is a little slow since you keyed it to the keyboard instead of the mouse while firing. I couldn't figure out how to jump onto the platform from the box nor the cart , but the time reversal effect and gun laser were entertaining to use on the crate.
Keep up the good 3D artwork and best of luck to more future levels/puzzles :)