Beautiful art, it reminds me the artstyle of Klei production, there is a good sens of humor in the dialogues.
I like the fact you can create your character, but the name input since very restrictive, I couldn't validate anything, until my name was very short, why is that?
I played with a game controller, for some reason I had a hard time with the jump, it react a bit late, maybe 0.1 sc after I press the jump axis. I am not very used to have a latence, so I don't know if i'ts because I played into the webbrowser, or if it was made on purpose.. Also, when you release the jump button, it doesn't reach the full jump, you have to keep it pressed. I took me a moment to get used to.
I encounter some bugs in the moving platform room (from the tutorial), my character was stuck in the air, floating on the left direction, I couldnt do anything. And another, the sprite character just disapear from the screen.
Otherwise, the level of polishing is pretty good. Mention + for the sound.