A lot of people say to do dungeons in this game, you have to let go of your previous MMO-mindset... and that's perfectly fine. But the game doesn't even teach you how to properly progress through dungeons and how to deal with the absurd damage and aggro-table of mobs. I mean, in almost all of the dynamic events I experienced on the road to 80, all I had to do was trait pure damage, sit in front of a mob, and 100 blades it to death. Maybe roll once or twice. Then you try out the first dungeon and an Ascalonian Ranger (which are piss weak out in the normal world) ends up wiping your whole team clean. Learning how to use combos and how to buff/debuff your team is really, really tough for a lot of people when there are zero tutorials before that.
I'm level 80, have 200 Ascalonian Tears stocked up, and I still haven't figured out how to do the last trash mobs in the AC Explore cannon room without wiping a million times. I just don't understand the threat management. I dodge away, use heal, blow utility spells and stuns when the ghosts focus me. They end up hugging my ass and I die instantly with no way to retaliate. There's no way for other players to "pull" the mobs off of me -- the mobs get stunned and then come right on sailing towards me anyway. What's the sense in that?