The Culling of Time

The above comment is a little bit confusing.

To make it clear to everybody, after youve cleared the final alley BEFORE mal'ganis, you enter and area wich doesnt look like the scourge taken it over.

There are 2 ways, you can either go right to mal'ganis OR you can go left. The infinite corruptor is LEFT, you wont see him there immidiatly, you need to walk tru that ally a bit.

He also drops a Flying mount all the time. Similiar to the ZA Bear in the old times.

I would like to give a warning to anyone who is attempting this in the near future:

Missing the achievement and the drake by 1 second will leave a permanent stinging feeling on your ego. No amount of Maly downs or Naxx achievements will ever get rid of it.

Would just like to throw it out there.

...ow, here it comes again...

If you don't kill him in the time left, he will walk into the portal and disappear. My group pulled him with under 1 minute left, got him to 37%, and then watched him walk away from us into his portal and disappear.

Make sure you give yourself enough time to kill him.