Full disclosure: I helped co-develop this game so I have full knowledge and understanding of how the game works and what you're supposed to do.
That said, I still legitimately think the game is very fun with an interesting story that builds up over time and cool mechanics involving the two characters the player can control to solve puzzles with different interactable objects per character while navigating a creepy environment.
I share my full playthrough and dev commentary in this video, hopefully it helps provide some insight for both some of the development as well as how the game is meant to be completed!