That was a super unique experience. At first I thought the entire game was going to take place in the facility, but the variety of different environments ranging from tunnels to abstract noise art realms really surprised me, and it made the entire game feel like a grand adventure.
One thing I did find confusing at first was the stuff you see when you close your eyes, I originally thought it was just mental cues you remember from the rooms, but then you could see through walls and not even see or recognize the things that obviously made a lot of sound. Later in the game of course it was a lot more clearer, but I do feel like explaining it near the start of the game could be beneficial.
Aside from that, I loved the game. It had a variety of environments, puzzles, and damn stressful chase sequences which felt very rewarding to beat. Congrats on the game!