I have a serious bug in that sanctum.
I can’t get the achievement for wvw season 1 or the still missing achievement in the jumping puzzle section – it doesn’t even count towards monthlies for me.
BUT I could open the chest after collecting the keys … Strange enough they won’t vanish from my inventory afterwards.
Have been going through there twice with my guardian and once with my ranger – same results, won’t count oO
I hope some gamemaster or something like that can give me the achievement(s) retrospectively?
Edit: Well if it’s important: My homeworld is abbadons mouth (DE)