This game was absolutely incredible, and I really enjoyed playing it! You did a great job with perfecting the lore and creativity of this game, and you should be proud of that. I hope it's ok that I did a video on this game:
I forgot to mention, but I have a few things that could help your next update from what I saw in my playthrough.
- Whenever I heard the submarine thud, I couldn't tell if it was a monster or not (maybe a more subtle noise or something) (it also sometimes plays after the game ends / or before
- The tutorials where it shows an arrow to what you're supposed to be doing is probably the most efficient way to show people how to play the game (The way you added progression was great). Maybe do that for other buttons too.
- Whenever I failed due to running out of electricity, the game would go black and stop (not sure if this is intentional or not).
- You could possibly have a "hard mode" in which you don't get the energy crank (in honor of my playthrough lmao).
I hope this helps, and I'd love to play again!