I've started playing for about the first time in a year. (I only have XD). I beat the required battles in Mt. Battle and saw I had to go to the Cipher Lab. After seeing the goofball Hexagon Brothers, I snagged their Shadow Pokemon. I traversed the lab and made it to one guy with a Carvanha. Took about 10 minutes to capture his S.P. and beat this guy, but I did. Faced Naps and barily won. Finally, as I was going to heal, Lovrina appeared from the elevator I was going to take.. I didn't want to continue so I stopped.
Diamond F.C.: 4467-8858-1499 name: Walter
Diamond: N'tl: 490 seen, 490 obtained. 4 years, I completed the Pokedex!