They're very difficult to beat, you need to train your Pokémon a lot if you want to have a chance against them.
As you get through the battle frontier you receive Battle Points, these points allow you to get items that are very hard to find in the game, you may exchange your points at the battle shops in the battle frontier area.
in sunny shore city in the ball capsule shop there is a lady in the shop make sure there is a Pokemon that worked hard in your first party slot if they didnt work hard then she wont give you a badge. keep switching your Pokemon until you get the badge.
I would try hard to get some brains.
you can find them underground
I would try hard to get some brains.
Practice, and hope for luck. The Battle Frontier is VERY hard to complete.
U need skill, LOTS, it's hard and at the end u meet your rival's dad!
You have to beat the battle brains (6) which are like super hard gym leaders. You can always battle there again whenever you want to.
There is no cheat for catching all the Pokemon on Pokemon platinum. it's all down to hard work and persistence.
its easy but hard
you have to get these symbols it's fun but hard
210 some are really hard
my envolved at level 38 and it was very hard
No Pokemon levels up through Hard Stone, but it DOES raise the power of rock-type moves by 10%.
It's very hard. You have to do 4 tasks. 1.) Complete the pokedex. 2.) Beat all the Frontier brains and get all the Gold symbols. 3.) Beat the Elite 4 and Champion 4.) Beat all 5 master ranks Pokemon contests.
because your dumb
That's hard as you can never be sure.