For me, I'd rather do dungeons solo for the dungeons themselves than the loot cause I love the detail in them. Loot is a bonus for me. Id rather they do 3 levels in dungeons with different rewards in each. Hero (purely for the solo player that enjoys the details in dungeons and the scenary and walkthrough): powerful rewards, low chance of exotic to drop Normal: pinnacle reward, slightly highly chance of exotic to drop Legend: Artifice rewards Inc the pinnacle, moderately higher chance to drop exotic In terms of catalyst, I'd say probably normal or legend. As said, I'd love to solo some dungeons cause of the graphics detail and music and atmosphere like grasp, warlords ruin