The pace was a little bit slow for my liking, but I loved the breathing, creepy environment. I got that the arrows were supposed to direct you back and forth around a seemingly infinite loop, but a bit more incentive to follow them would be good. Maybe a smaller loop or a sprint in which you can see that you're making no progress... until you spot the clue, turn around, and realise that in reverse the loop changes appearance. The ending could have been a bit more climactic too, but for 48 hours this is impressive!