Love the art and music. As mentioned about, the water limitations are too harsh for the game play. I think if you wanted to slow down the pace of the game, you can add a water mechanic to reaching the next stages and not penalize people for going back to levels that have been visited. That way people won't blow through the game but have the option to play the game more.
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 "Mighty Knight"){kind=icon}
We'll be making changes to the Water system in a future update. Thanks for the feedback!