Guild Wars 2

I, and many others, are unable to get the “No Free Lunch” achievement.
The description reads: “Defeat the Champion Toxic Spider Queen without allowing her to reach a cocoon.”
She didn’t reach any cocoon by any means, still nobody got the achievement.

if anyone goes up to her and gets cocooned and eaten then leaves the area it still counts as fail for the group that do come along and kill her, you need to make sure no one gets eaten at all, ive seen this so many times, someone has ran past got cocooned eaten and left, then when the group get there they wonder why they cant get achievement.