Hiya, I've recently picked up the game and after doing a grueling iron fist run through Southpaw (with many continues) for my first time, I found there is a mode known as Allison Fist Mode. You run through the tower as Allison and only Allison. Floors are also randomized like in Iron Fist and you only get 1 live and no continue points. It's another difficulty like Open and Closed Fist, and since there's leaderboards for each difficulty, why not include Allison Fist mode too.