Travel through the postgame areas, find all the sages (tho idr if you can find ALL of them,) beat the E4 and Alder, visit the White Forest/Black City, climb Twist Mountain, explore Giant Chasm, go through Challenger's cave, try and find the three Muskedeers and also try and find Landorus if you have both Tornadus and Thundurus, and I guess that's about it. Don't remember what else you can do. Does Entralink still work?
