I added dialogue from the Blacksmith spelling it out, just too late to push it.
Yeah that's intended. If you load up the game again, it should have saved right outside his entrance. I only had a little while to create and tweak his jumping AI. That was done second-to-last day. To get out you have to defeat him, which opens up an area of the map the camera won't reveal until his death. But once you get the jump boots to get out of there, that's really as far as I got in the level building. Though you can collect a few more hearts.