In the dungeon, you are able to walk off the map under the stairs and get trapped. I know you can’t see the character, but I promise they are there.
Sorry about that @ShadowGearX, will get this spot fixed up. Thank you for the report!
Not related, but that valve right there won’t work. Nothing you do in the area lets you turn it so you can’t open that gate. Unless I’m doing something wrong, but all the other valves worked with no issues.
Once you solve the puzzle, you can’t interact with stuff anymore so you won’t lock yourself out or undo the correct solution.