Just tried fighting those Xen bastards at the top of the volcano, was useless even to try.
Melia is damn weak and dies damn fast and forces me to fight agains 2 Pokemon at the same time and the hyper potions the enemies use don't make it any easier.
Also sucks that there is no quick way to get up and down the volcano when you've already reached the top, making it too annoying to relearn a pokemon a move before the battle.
Then there's the f*cking OP Dragonite that's almost impossible to beat because you don't get any decent dragon or fairy-type pokemon, rock-type gets fire sub-type which he resists and ice-type attacks get halved in power.