How to do the Insane achievement? There is a long grind ahead of you. But it shouldn't be too difficult or take that long if you already have some Darkmoon Faire rep done. The Darkmoon Faire throttles the progress because you can do the dailies only one week per month, so it takes around three months (with some extra quests and items you can buy from AH) to get to exalted.

There is also two very long grinds, the other one being Goblin grind however you wish to do it. We did it behind Caverns of Time at the strand shown on the video. It's around 23.6k mobs. That's quite a few mobs. The other long grind is where you need the rogue - you need to farm around 1400-1600 Heavy Junkboxes from Lower Blackrock Spire.

Bloodsail Buccaneers - From Hated to Honored
Steamwheedle Cartel - From Hated to Exalted
Ravenholdt - From Neutral to Exalted
Darkmoon Faire - From Neutral to Exalted
and there also used to be extremely insane Shen'dralar which was needed, it required around +300 Dire Maul runs to get to exalted. It is not needed anymore, it has it's own feat of strength.

There is no footage of Bloodsail Buccaneers grind as we did it first last fall almost an year ago. You will also get Avast, Ye Admiral feat of strength from that.