I really like the atmosphere and setting that was created! Great job on the audio, especially!
I did have some trouble with the levers flickering, though - seems like that's already known, haha. I'm wondering if it's necessary that the levers can go on and off, since they seemed to only turn off barriers. Admittedly, I did use the lever's changing hitbox to wedge the powerboxes out of corners every now and then!
Still, this is quite a lot of content for the time given and it was nice to play through! Especially enjoyed the tenseness of the menacing timer ticking down!