Pretty much all I see is movement and looking, which for a new developer means a lot, but as for it being a game, you could do a lot more with the 4 extra hours you could use. At the very least adding settings, with static variables for mouse sensitivity and such would be amazing. This could easily be shifted into a parkour game by adding jumping and moving platforms.
Great to see you expanding your horizons with a new dimension, can't wait until you start with 4d games!