So one of the parts the game needed more attention put to was a tutorial. I presume one of the dead ends you were talking about was blocked off by a giant hole. You're supposed to fill the hole with a rock so the player can move over it. It's not the most intuitive to be honest.
There will be a post jam version with some updated levels, tutorial, and most importantly we will actually package the dialogue.json file that didn't get packaged into this build. There's actually a whole elaborate story with dialogue boxes and all but because that didn't get packaged that system broke which has been detrimental as it now causes crashes sometimes, you don't get to see the story, and other systems that relied on it are broken too such as going to level 2 and level 3.