Pekingduckman

Yep the quest was removed with the update that rid of most of the under 50 blue quests. A similar quest is the Shadowstrike instance which needs a quest to be activated, and gave out the Obsidian Serpent. I only got the Secret Agent costumes because Alienware did a gaveaway a few years ago.

Yep, I can never finish the Lightning BM quick combo due to ping. That remaining challenge taunts me still.

If I gained achievement bonuses from a set, then discard or mail one of the costumes, do I still keep the bonuses?

The sense of entitlement is strong with this one, but I'm glad that Bethany proved you wrong. And I spent 120 runs on Infinite Challenge, 200+ boxes on Wild Horse and Bully Wrap, 98 runs on the Obsidian Serpent set, 70 runs on Secret Agent, and 88 runs on Junghado's gear, but you don't see me saying that just because I spent a long time farming, everyone else must too. Spending hours killing the same boss for a minuscule drop is not fun, it's a waste of time which not everyone has. And considering that none of the costumes are bound to account, what if you also want it for an alt? What then? And FYI, in the Korean version of BNS, all dungeon cosmetics can be bought via the achievement merchant with 10 runs of a dungeon, making the grind in the NA version even more pointless.

I was hoping that NCSoft would add the two items to the merchant of wonders today, but nope, they seem to forget that the Zaiwei Ruins exists. http://www.bladeandsoul.com/en/news/blade-ghoul-2017-merchant-of-wonders-returns/

I'm also interested in any follow up. One good thing about the server merger is that you can at least find parties at Zaiwei Ruins now at busy hours. But I opened around 20 boxes and only got soul shields :(

Yes, sadly I took a break from BnS mid last year, and by the time I returned Zaiwei Ruins was removed from the daily rotation. I only managed to get into some runs during weekends, and neither items dropped from the ~22 boxes I've got. The main problem now is that everyone is doing the Celestial Basin and White Orb prices fell like crazy due to the trove. With the new skills system though, I'd assume that three 850 AP characters can solo it. If anyone in Mushin is interested for a party let me know