Cool game!
It's very fun to play, although as you said in your devlog, it's hard to see the UI when in-game. You could add three little stamina meters, like in BotW or something like that. Also I discovered a bug where when both players fall into the water at the same time and lose their last life, the winning player hovers under the text like expected, but after a few seconds, they regain control. It doesn't really matter, but it's still a bug and I thought that I might as well share it with you here.