[Suggestion] Hardcore Achievement
That isnt that substantial to be honest. It simply means the person going for that title afk’s while the rest of the party finishes story/raid for them.
Still it requires a guild effort to get one person his achievement for ALL bosess.. AFTER they clear 1-80.. WITHOUT boosts. (Which itself is an achievement to do without dying).
Being AFK for the hard fights isn’t hardcore. I’d say there would have to be some mechanism to require the person getting the achievement to participate during the entire fight.