According to the official players guide, it's merely 'Try the Battle Subway 100 times or more'. To get Challenge Mode on White 2 or Easy Mode on Black 2, you must use the Unova Link and swap keys with the respective editions. It doesn't say anything about winning 100 times in a row. You will next encounter Team Plasma as you go to leave Virbank City. Specialty: Ground-type Reward: Quake Badge. Rebattle? They use Pokemon of a certain type.
Found insideIn Privilege, Shamus Khan returns to his alma mater to provide an inside look at an institution that has been the private realm of the elite for the past 150 years.
