Thank you for the game!
I usually don't play first-person horror games because they scare me too much, but I found it refreshing that this game does not rely on cheap horror and does a great job of building a sense of horror through staging, level design, and narrative. Also, it was kinda reassuring to know that the monsters only dwell underwater, and the surface is completely safe, so I can control the level of risk at every given moment. The levels are very well made. I liked the puzzles and how easily readable they are; so often before going underwater, I had the opportunity to get the layout of the level, understand where my goal is, and the patterns of the monsters' movement. Also, of course, visual and sound design are top-notch; they really deliver the oppressive, suspenseful atmosphere.
Overall, great job!