Cerulean Gym 2

Cerulean Gym 2 is the 11th level added to the game, and the second part of the second gym challenge. After you beat her, Misty will give you the Cascade Badge.

Layout
Waves: 1

Spots: 2

Defending: Rare Candy (10)

Tip
To easily defeat Kyogre, simply use a Pikachu with Electro Ball and a Golem with Rock Blast. Use a stat-reducing move if you own one.

Another possible solution is to use one pokemon with a strong move and another pokemon that knows Roar. Use Roar whenever Kyogre is going towards the candy. Make sure that the attack you are using is strong enough to counteract Kyogre's Rest.

Another very good solution is use Raichu with Thunderbolt and Victreebel with Giga Drain. It also works fairly well with a Magnemite with Spark instead of the Raichu, though it's a bit more risky.

Another way is use two Raichu both with Thunderbolt and Thunder Wave. Once Kyogre is paralyzed get both to use Thunderbolt. This strategy will work if process is repeated after Kyogre uses rest.

Another way is to first, use a stat decreasing move then swith full out attacking with electric and grass.

If you have pokemons that learned Thunder and/or Discharge, this should be a piece of cake. And ANOTHER way is to use Raichu with Thunder and Ivysaur with Sleeping Powder. AND ANOTHER way is to use Ivysaur and victreebell both using razor leaf.