That did not end well for Dosan. But at least we got the final stage of the mark so now we can teleport. This level is definitely meant to make sure that you learn to incorporate this new ability into your repertoire. I found it pretty frustrating because frankly I kept forgetting it was there and you really can't. This level actually took me longer than the previous one, there are a lot of failed attempts on the editing floor.
Found it especially interesting that this level does not let you pick your gear, not even on subsequent playthroughs. This is because the teleport move is actually tied to your outfit, changing to another mask removes your ability to use it and a bunch of the puzzles in this level are impossible (or at least intended to be impossible/fiendishly difficult) without the ability to teleport.