There is no way to remove the boulders yet because I have not made the Greenfen Forest area yet.
I’m working on sounds at the moment and I hope to get it into the game for the Patreon Release 0.11.0
When the next version comes out there will be another zip file. Just delete the old files and extract the new files to the same folder. There is no save/load feature yet so no need to worry about losing your game progress.
Be sure to follow me here so itch.io sends you a notification as soon as the next version comes out.