Faerie.1937

@"Chris Cleary.8017" Could you explain me this ? Yesterday I've met the Svanir Shaman. The one from the current World Boss Fest rotation. I thought it was a good idea to help me complete the Svanir's Bane achievement. I did the pre events. I did damages on portals. I did a good amount of damages to the boss itself too (not a "1 1 1" rotation if you know what I mean).My rewards were the bonus box. It means that my participation was high enough for the current fiesta. The boss chest rewarded me with an Eternal Ice I had the gold karma and xp reward too .... But the Svanir's Bane achievement ... No. Still here uncompleted.So, my question is : How much damages do I have to do to complete this achievement ? Billions ? XDPS: Same thing with my second attempt ... All the same but the Eternal Ice. Edit: And looking for solution, I'm discovering this problem is as old as the game... :/ Great.