Well after become champion you can go back to old place collecter pokedex find new or challenge with new mode like challenge mode hard mode. New route will unlock and you can going in.
You need to defeat the elite four and the champion
In Pokémon White 2, the move Waterfall can be obtained as a TM (TM99). You can find it in the cave known as the "Cave of Being," which is located on Route 21. After defeating the Elite Four and becoming the Champion, you can access this area and retrieve the TM from a location inside the cave.
You can catch it in Reversal Mountain, after having defeated the Elite 4 and Champion.
The elite four, the champion, (Cheren, Bianca,you have to find them)and,(Cynthia,after you beat the game)
Yes you can battle the elite four and the champion as many times as you want
ok, here's the steps: 1. beat black kyruem (black 2) or white kyruem (white 2) 2. beat ghestis 3. beat pokemon legue (sorry spelled it wrong) 4. beat pokemon league champion iris 5. catch every pokemon (black/white kyruem included) 6. get every item 7. get all wallpapers 8. beat ash (known as red)
after defeating the elite four/ champion, you need to go to Nuvema town, and talk to Cedric Juniper.
In Black 2 as well as White 2, Skyarrow Bridge opens up once you've beaten the Elite 4 and the Champion.
4 because the sell pokemon white and pokemon black and know they sell pokemon white 2 and pokemon black 2
You beat the Champion. Then your name and the pokemon you used will be registered.
Yes
There are 300 Pokemon in the Pokemon Black 2 and White 2 Unova Pokedex.