I gave the feedback on Maytch's twitter DM! For a more general comment, I'll say that difficulty feels more balanced in this time around, and the modified jump (you need to press Space) feels great.
I'll also emphasize on the teleportation skill though, it's awkward to learn but is designed to save you, the player, so, so many times.
I love the design of the new world! The background feels suitably bland (for creepy) , and the xylophone sound for collecting music notes was unsettlingly cute. It's also suitably difficult for the third world.
One thing I forgot to mention in the DM: the Arena is a lot more fun to play WITH the variable jumping - or atleast I think it'd solve its problems. Feel free to make it available again in the next update OR refine it in future!