PvE end game content...
You scale down to any dungeon level so theres 8 dungeons on "story mode" which is like the "normals" of wow dungeons...then each of those 8 dungeons have 3 explorable modes each wiht their own path mobs bosses etc and can spawn random events and random dynamic events within them making unique each time...these are considered like "heroics" of wow...but not he nerfed pieces of shit we are used to...everyone has said they are very difficult at times.
This is where people get scared theres no "raiding" of gw2...dynamic events scale to everyone still challenging, consider it like world bosses back in vanilla etc.
Then elite dynamic events theres not much known atm but these are the difficult fucked up shit that WILL...110% guarantee a co-ordinated group of people to down...
Also please remember this dungeons etc DO GIVE UPGRADES FOR GEAR!!! however its not much its like TIERS of difference like we are used to with wow...there is challenging pve content for both small groups and bigger groups in elite DE's...