WoW WotLK Exploits - "Medium Rare" Achievement Done Easily : World of Warcraft General Discussions

The Medium Rare achievement requires that you to kill a rare spawn from Outlands.
Nuramoc is one of these which is also a tamable pet by hunters with the 51 Beast Mastery talent.

Even after being tamed the pet still counts towards the achievement.
So, find a hunter with any of the rare pets and go to one of the arena's and kill it.

This is also a quick way to make a bit of gold from the people to find a rare spawn them self.
A member of the opposing faction can also get the achievement. This only seems to work in Outlands.
Untested with the other tamable rare beasts from Outland but I'd assume they'd also work.