This game has 8 badges, as always. The type of each Gym Leader is (in order): Grass/Fire/Water (depending of the pokémon you choose first), Normal, Bug, Electric, Ground, Fly, Ice and Dragon.
The Pokémon League and its Champion Road are the last challenges for a trainer. You must go first to the Champion Road, a type of 'rambling' cave where you have to find the exit to the Pokémon League. Inside you have to beat all trainers you find, and get over all the obstacles there (surfing, rock smashing, etc.). It's a bit difficult to pass, so you should have with you a lot of healing objects and more.
Then, when you reach the Pokémon league (it's an incredible building) you have to defeat all the Elite Four and the Champion (The elite four are 4 expert trainers that you have to defeat one per one. In the 5th generation, you can defeat them in the order you want. Their types are: Ghost, Psychic, Dark and Fighting. The champion is the best trainer in, this case, Unova. It's very difficult to defeat and you should have a very good PKMNs (with good attacks, good level, etc.)) He's not having a specific type (as Cynthia in 4th gen.). When you defeat him/her, you'll be named as Champion and registered in the Hall of Fame (where best trainers are registered).
But in this generation, you won't defeat the Champion, because Plasma team will come and spoil everything...
After during the last events, you'll can go to new routes (11, etc. But caution, there are very leveled up pokémon). In route 15, you'll find the lab, and near to it, the Poketransfer.
hope this will help ya
