I managed to get through the first level using the secret / second ending, as I think I softlocked myself by accidentally deleting the title card in the editor. But, I then got stuck again on the second level - I'm assuming that you're supposed to spend the gems to buy chests until you can get all 4 of the gear items, but I ended up running out of gems. I clicked around a bit to try to figure out other ways to make money, but I wasn't able to find anything (this might be a user error on my part?).
Overall, I think it would be helpful for some more guidance in the first few levels to let us know how to use the different tools available to us on the desktop, and that the player is supposed to explore a bit more.