Restore Balance sounds like it's just for druids, but anyone can earn it. The achievement asks you to "Visit the Shrine of Fellowship in the Jade Forest and follow in the footsteps of Chen Stormstout." What these cryptic instructions really mean is to find the in-game location where the Mists trailer happened.
Head northeast from Grookin Hill toward the mountain on your map. When you see Shrine of Fellowship pop up on your screen, you're in the right place. It's a flat, misty plateau with a prominent jade bell (it was featured in the cinematic).
Look for the Broken Incense Burner. You'll notice it's a bit crooked, just like in the trailer before Chen straightens it. Click on it to "restore balance" and you'll earn the achievement. I wonder if there will be a similar achievement for the Warlords trailer...
Filed under: Mists of Pandaria