I am currently hosting a partially-cleared (there are no enemies up until the kite) instance of the Cliffside Fractal, in which there is another kite.
If you need this achievement, feel free to /join Wisteria Herald. If /join doesn't work, either try /invite Wisteria Herald instead (there may be just me in the party, in which case /join won't work), or try to /join again in a couple minutes - the party might be full, too.
Once you do, go to Lion's Arch, enter the open version of Fractals of the Mists, and run up some stairs. There are some pressure plates that'll knock you down and bleed you, they look like slightly raised versions of the floor - you can dodge roll over those. There are also gargoyle-type things on the walls that blow gusts of wind that will knock you down. You can dodge or use stability or just wait until the gust blows and then move on by. If you can't get past this part on your own, I can portal you!
I'll update this post when I am no longer here.