1. Load up Act II - Part 2 - Lieutenant Vachem
2. Take the portal to "Khasim Outpost"
3. Follow the path north east out of town, and it will take you pretty much east of town.
4. Select the quest and enter the "Command Post"
5. Kill the guys inside, complete the quest and head back outside
6. Kill all the bad guards outside, complete the quest and get 17.6k
Will post a video/pictures if anyone needs, actually i'm down to completing the quest in 1 min 30 seconds which includes the 10 second log out, so the xp is pretty solid.
Enjoy