Ordos

Ordos is now accessible for those who achieved Infinite Power XII in Mists of Pandaria Remix. I did this today on my main (non-remix) toon. Once you get the achievement, you are granted four toys, Fortitude of Niuzao, Kindness of Chi-Ji, Fury of Xuen, and Essence of Yulon. You can now go to the bridge on the timeless isle at /way 52.64, 46.76, and run to the edge of the bridge. If you have used one of any of the toys and have the associated buff active, you will automatically "jump", its kinda a wind effect, but it throws you to the other side and you can now access the Ordon Sanctuary without being teleported away and kill Ordos, which will grant the Feat of Strength Ordos

/way #554 46, 78 Start of path to Ordos
/way #554 56.39, 57.87 Bridge
/way #554 52.64, 46.76 "Jump Point"
/way #554 55.0 18.1 Ordos

As of 6.2.2, this is still listed as an achievement, when it is in fact better classified as a Feat of Strength.

If you do not have the Mists of Pandaria legendary cloak, you are unable to obtain this achievement, as getting anywhere close to Ordos isn't possible - entering the courtyard where he spawns will instantly port you back out, unless you have the cloak.

Flew down on a glider and was able to land at 54.48, 15.06 without being ported out; my Reaping Flames was able to reach and one-shot Ordos from here. No achievement rewarded; I put in a ticket. I know they intended for it to only be obtainable with the cloak, but the achievement doesn't say anything about that requirement, and that's on them. I defeated Ordos, that is the only thing the achievement says I have to do. Will update with Blizz' response.