Another long-neglected goal achieved: Underdark campaign completion.
The reason I had stayed away from this one for so long was that I perceived it as extremely grindy, and looking at the raw numbers, having to acquire 7000 Faerzress at 18-50 units a pop certainly does add up to quite a slog. Thankfully I got a lot of mileage out of a recent double Underdark currency event.
I did realise though that all things considered, the grind wasn't really that much worse than for most campaigns; what made the difference for me were the heroic encounters. I liked them well enough as something sprinkled in among the regular quests like in Icewind Dale, but a whole campaign of nothing but grinding heroic encounters (or skirmishes I guess) was just super boring to me. I like the classic questing model. I don't think I would have much fun in Guild Wars 2.