Thanks for the comments. I totally agree, both of those are on my TODO list of shame that was never done haha. Specially the water FX, I'm a programmer, so I can manage to do some art with basic shapes, but I couldn't find any free water visual FX or water SFX that would fit and it's pretty sad. As for the tutorial, totally agree, it's something else that I had to let go because of not enough time, so I felt having "how to play" screens was a good backup plan and easy to add in the pause menu in case the player is confused and don't know what to do.
Thanks a lot for the feedback !