Water, fire, flying, psychc, grass, and ground really help so pokemon with these types lvl67+ and lots of healing items
Hope this helped
No, you do not have to beat the Elite 4 to get the National Dex in Pokémon Diamond.
You can get them by winning contests or you can beat the elite four
Beat Cynthia after Elite Four
After you beat the elite four.
-mongmong908
You must beat the victory road.Then,you are in the Pokémon League.Beat the Elite Four and then the Champion.Then,you pass the Pokémon League
finish the nation pokedex
beat the elite four and shes the champion
She will if you have beat the elite four and the champion.
To get the National Pokedex, beat the Elite Four.
Yes,you can trade with perl,diamond,platinum and soul silver.You can trade before beating the elite four.
Beat all the elite four and there champion