In Black & White 2 you battle through the usual eight gyms before taking on the Elite Four. We also note the significant trainer battles below.
There are 3 new gyms changed from Black & White 1. The first gym is now run by your best friend from the first games, Cheren. The second is a Poison-type gym run by a rock musician. The eighth gym is Water-type. When you reach the Elite Four, you can fight them in any order you wish, like Black & White.