Sorry to hear that! I've never come across that bug before but I suspect it has something to do with the flashlight not coming on. Could be related to double clicking the door or something. I hope you were able to complete the game in another playthrough despite the bug. And thanks for the kind words! Iron Lung was definitely an inspiration during the making of this.
Yeah I replayed it and didn't experience the bug again. I did experience a collision bug in the drill with the wall next to the computer, got stuck but was able to shake myself loose after a minute of button mashing haha. But the sound design is perfect, the visuals are fantastic, and that tunnel is the PERFECT amount of spooky! I would love to see this idea expanded further!