Really cool game. I enjoyed teleporting by throwing the gun it was fun. The speed of the character is a bit too much I think. The moving plateform that you added doesn't work, the character doesn't follow the movement. I think you need to add a physic material to it with a high friction.

This game absolutely oozes atmosphere, and the eerie glow of the levels and the lighting on the lasers are top-notch. I did find that some weirdness with the controls (I had some difficulty throwing the gun correctly and it sometimes didn't teleport me) and the graphics settings (slow framerate + the lag on loading into levels) made it hard for me to make progress.