You’ve succeeded in making me angry, ArenaNet. I’ve been attempting to get Six Minutes to Knightfall the entire two weeks that this Living Story entry has been going. I’ve never seen a single map get it. This is likely because I can’t usually get on at prime times, but regardless, a timed achievement like this should not rely on a map’s worth of players.
I repeat, a timed achievement should never rely on the coordination of a full map’s worth of players for completion.
If you continue doing this stupidity you will have players, like me, who will try repeatedly and consistently to achieve it and are cheated out of it through no fault of their own.