Thank you for all of your kind words.
I'm so glad somebody confirmed they finished it! I was worried it would be "I got 13th lvled" or "I didn't realize I could charge punch" every time I read a new comment. I needed someone to experience lvl 14 and 15!
In retrospect, I wish I added a "last level" and "next level" button so that people could jump around if they needed refreshers or wanted to skip 13.