This is cool! A very solid lost-vikings-style puzzle game with alternate dimensions, The red/blue color schemes are a great way to keep track of the two different characters.
I was impressed with the way you gradually rolled out new mechanics. It was not immediately obvious how some of the new moving parts worked, but the most obvious tests were a surefire way expose the underlying behavior - which I'm sure was not easy to design!
The story was interesting, but I wish there was a way to jump immediately into the action. I was excited to play this because it was a jam entry, but I might be turned off by a webgame frontloaded with a few minutes of reading if I encountered it in the wild.