Very interesting premise and a great prototype. Very refreshing to see more 3D content in jams. The level selection mechanic was very cool and overall the game ROCKS!
One suggestion: In the McAfee level there is a barrier that moves vertically. Given the perspective, it is not very easy to see at a glance that it has vertical movement. Something I have done in the past to combat this is to make it a stationary barrier that turns on and off. like a laser barrier (idk if this helps the mental image), this allows you to still have the time gate but respects the camera angle.
Also QOL thing but maybe making the player face the mouse cursor could be a nice touch.