Yeah, the original concept was to "uncover the true reality of that place" to go with the Under the Surface theme, being more of a mystery game, but I ran out of time and had to rush the progression a lot after getting the main mechanics and presentation down. There was also a temperature mechanic with a heater and battery, sea currents and a turbo boost to push against it...
But yeah, the progression is the weakest part of the game because is the last thing I did, but so is the life of a jam game. I'll see if I polish this further, thanks for the feedback!