I'm so sorry because I couldn't finish the game loool it was too scary to me (which I think is a good thing)
The way the PULSE system worked and the sound design that goes with that is really awesome, it makes it feel like every time you use it there could be a jumpscare. On top of that, since the player has to trigger it themselves the tension and timing is placed onto our shoulders.
I ended up watching a gameplay video instead. (and I'm relieved it seemed like there seems to be no actual monster called the Darkness that stalks you throughout the game haha.)
I do think the game gets a bit dark / how to get an idea of where things are and where you are. So maybe some type of map could help, or make the echolocation slightly brighter? But this is also personal taste since it may be that the disorientation is part of the experience.
Thanks for the game and great work!