Was a fun game at the start and when the twist came towards the end, it become even better! How things went from normal to... Dark and evil was a good transition. Didn't notice the head of the clean machine taken off when I was playing but realised you had primed the player to figure out what was underneath the machine from the start of the second act.
The design of the monster was really good and added a layer of spookiness to the lore and also the game itself. Not sure if there were multiple endings, but if there were (sorry I did not get them all) it's a really good way of making the players go through this great game again and it was well done!
The machine at the end was really well balanced as it did not make it too difficult for the player to get to the breakers and also the layout of the map was well done as well. Loved how you added little alcoves and vent like things for the player to hide in.
The story was interesting too and the way you primed the player to think twice and suspect the company through the conversations and also the machine at the beginning was really well done and subtle enough to add to the story in a large way! (If that made any sense.)
Overall, it was a great game and you've done an absolute great job at it. Congrats and good luck for future projects!