Help
When you get inside the door with the keyholes around, many trainers in the different rooms want to battle you. Take the elevator where Silva is standing up and then you should go into the room at the left side and beat the guy thats standing there. There is also a pc there. Move your pokemon in and out of the box to heal them. Then walk out of the room and go upstairs. Battle the Gonzap or something guy. He has a shadow Skarmory lv.47. When you have beaten him, you can go into the elevator. That will direct you to the Tower Colosseum. Trainers: Jomas: Porygon 2, Zangoose and a dark Miltank in lv.48. If you snag Miltank and battle her again, she will instead have Exploud. Delan: Mightyena, Sharpedo and a dark Absol in lv.48. If you snag Absol, and battle him again, he will instead have Sneasel. Nella: Torkoal, Magcargo and a dark Houndoom in lv.48. If you snag Houndoom and battle her again, she will have Ninetales. Ston: Cradily, Cacturne, Vileplume and a dark Tropius. If you snag Tropius and battle him again, he will have Sceptile. Nascour: Walrein, Xatu, Duslops,Gardevoir, Blaziken and a dark Metagross in lv.50. If you snag Metagross and battle him again, he will have Alakazam. Hope it did help you. I will write about the last guy tomorrow.