The wiki lists a collector achievement for every single dungeon, but my panel only displays achievements for Ascalonian Catacombs, Caudecus Manor, Citedel of Flame and Arah. Am I doing something wrong? Did anet do away with them? Any help is appreciated. Thanks in advance! 
Missing Collector Achievements?
A lot of collections are hidden until you unlock at least one item. If you haven’t gotten a skin from the others, then you won’t see them.
John Smith: “you should kill monsters, because killing monsters is awesome.”
Very interesting! Thank you! I had some tokens and bought some things and unlocked a couple of them. So nice to see them now. Have a Happy Holiday!