Yeahhhh, so I didn't really account for "walls" when using a Tile-Palette Collider. I saw this happening and honestly didn't have the time to correct it. Having more levels just felt more important at the time. I'm not a good level designer so this process takes me a lot of time, but I'm working on getting better!
Also, thanks for your kind words and feedback! We definitely have plans to keep working on this and release is on mobile when we're happy with it.