The ruins look intriguing. I would love to explore the world in a less stressful environment.
I think the game would benefit from a less steep difficulty curve. Right now, it's difficult to locate the leaks, let alone navigate the huge map to fix them. Maybe starting on a smaller map to familiarize yourself with controls would make the game more approachable for new players.
The physics could also be improved. The player character feels a bit floaty.
Overall, it's a very ambitious project. Congrats for finishing the game on time! Good luck with your future projects!