Like previous challenges, to obtain Arkham Harley Quinn for your collection you must defeat five challenge stages. Each stage has it’s own conditions that must be met before players can enter. The first stage only allows players to use Bronze characters, while the third stage allows bronze or silver characters. The second, fourth, and fifth stages all require specific hero to be a part of your team, for this challenge it’s Sinestro, Black Adam, and Batman respectively.
Players must earn tokens to enter each battle in the challenge mode. Upon entering the challenge for the first time players are granted 25 tokens. Additional tokens are earned by winning battles in Play mode or by purchasing them in the game’s store.
Arkham Harley Quinn has three special moves which will be familiar to those who already have a different Harley character in their collection - Batter Up, Bag-o-Tricks, and Mallet Bomb. Arkham Harley Quinn will be of interest most to those who enjoy having The Joker as a part of their team, due to Arkham Harley’s Passive ability titled ‘This one’s for Mr. J’. Arkham Harley’s passive ability has two facets, when Harley is in play and a new enemy is tagged in, she will sometimes perform a surprise attack, also if The Joker is on Harley’s team and is defeated, Harley will gain full power.
The Arkham Harley Quinn challenge will run until January 13th, 2016. During that time, it can be completed three times.