Me and Emmetcullen did Superion and Lich easy. Lich is easy if you have someone who can keep his attention while the higher leve with stronger weapons sprays, and Superion is actually easy to Solo, just simply dagger spam him and he gets stuck in the spam animation, the only problem you need to worry about then is the Mages casting Spells at you, so you REALLY have to keep miving so you don't get hit. Overall, they both right now, are easy for 2 people.