What a beautiful well design simple game. The pixel art and level design is fantastic. Your use of colours made it obvious where I needed to go and how to progress the story forward. The story itself flowed really well and was a great use of the theme.
Only suggestions would be to have a few obstacles, or parts of the god that need to be collected to extend the story and game play. Also, structurally, it could use a mid point with a point of no return. You kinda have one with the transition into deeper waters, but I’m not sure what you’re leaving behind. Adding clarity on what you’re leaving behind when you descend could help.
Overall, a very polished well written game with a well constructed level design.