Yeah, sorry about the softlocking. I somehow didn't catch that it was possible until it was too late. Its technically possible to escape by making another object next to your spawn point and programming that object to repeatedly create you, but I don't blame you for just quitting.
Thank you for the extensive feedback! In retrospect, I do tend to agree that the game would have been better with all the runes unlocked at the beginning. I didn't want players to be overwhelmed at the start by having so many runes so that's why I made them unlockable, but having access to all of the runes from the start would have allowed clever players to skip entire sections of the game, and would have opened the door for even more discovery and experimentation (which is what the game is all about).
Also you're spot on with the Tunic thing. This game was heavily inspired by Tunic and Chants of Senaar too.