Complete the Unova pokedex (after that coplete the national pokedex)
you need to find 210 Pokemon to complete the pokedex
There is only one legitimate way to complete the Sinnoh Pokedex. To complete the Sinnoh Pokedex you must trade for the missing Pokemon with Pokemon Diamond, Pearl or Platinum.
There are 300 Pokemon in the Pokemon Black 2 and White 2 Unova Pokedex.
First complete the sinnoh pokedex, 210 Pokemon
complete your national pokedex, of course
Complete the Unova pokedex (after that coplete the national pokedex)
You have to catch 151 pokemon to complete the pokedex.
After beating all the Gym Leaders, complete your pokedex.
You have to beat the main storyline and possibly complete the Unova Pokedex.
you need to find 210 Pokemon to complete the pokedex
Since Victini is numbered #000 in the Unova pokedex, I'd say yes, you need or see Victini in order to complete the pokedex
level up your Pokemon and complete your pokedex
you have to complete the first pokedex
There is only one legitimate way to complete the Sinnoh Pokedex. To complete the Sinnoh Pokedex you must trade for the missing Pokemon with Pokemon Diamond, Pearl or Platinum.
Complete the Pokedex
There are 300 Pokemon in the Pokemon Black 2 and White 2 Unova Pokedex.