After completing the national pokedex go see dr. oak (he'll be very happy) and then go to celadon city at the top of the tower in the "game freak" room. the guy in that room will show you an official paper from game freak to congratulate you for your hard work. If i see anything else I'll update the answer.
it's a hard work but it worth it!
Chat with our AI personalities
get the complete pokedex from prof. oak. go to the sevvi islands and do missions there. get mewto in cerulean cave. complete your pokedex.
If i am right you have complete your kanto(???) pokedex. I don't know if it is kanto or national.
catch 80 Pokemon
Yes, but you must have the national pokedex
you need to find 210 Pokemon to complete the pokedex