To be honest, I was expecting a more critical review, so I'm surprised and glad you found fun through the jank.
WilliamV4 was the one who worked on the music and sound effects, so all credit goes to him.
We are aware of the numerous bugs, and we should have spent more time with the web port to make sure everything wasn't broken. If what you mentioned about the portal is what I think, the ability to go back to the previous level was intentional. Otherwise, it's probably another bug I have not encountered myself.
I also question whether the parallel platforms in this current version of the game is enough for it to fit the game jam's theme, but we had other ideas for how to incorporate the theme in other parts of the game; needless to say, those changes did not reach the version on this page.
Thanks for the comment, and (once again) I'm happy you found (at least part of) it quite enjoyable to play.
Please ignore the "switchted" typo.