I have a question regarding this achievement.
We're trying to get down the guild edition of it for the mount, and it says we gotta kill the last boss of the 5.0 raids in heroic mode.
My question is this: Is it possible to do these raids on normal and only switch to heroic for the final boss?
or are they like firelands, where you can't fight ragnaros on heroic unless EVERY boss was killed on heroic?