I like what you did with the colors, expectably with the water.
But i have to agree with the comment below that it feels like i am running on ice all the time, a but more friction would be welcome. I also think the jump had to much airtime it made jumping very hard.
And of course the classic stick to a wall issue that lots of physics have (jump against a wall an keep pressing forward you stick to the wall and don't fall)
For a jam a very good game.