Azjol-Nerub is my 6th random heroic and my 7 heroic post-patch 3.3. What's funny or strange is that the PUG tool picked this dungeon twice for me in the same night. The first time, I found myself at the entrance and the rest of my group wasn't in sight, not even on the map. They were probably at the end of the dungeon. I asked them where they were and they didn't respond so I dropped out since I wanted to experience the entire instance.
When I queued again later for the random dungeon I found myself inside the same one but with the whole group at the entrance. Maybe that's the way the tool works though.
This was another short dungeon, taking only about 30 minutes. The final boss, Anub'arak, was very interesting. The tank quickly filled me in with what I'm supposed to do for this fight. Truth is, if you don't know it, chances are you will die. In fact one of your group just did, but we did fine without him. And here's why.
You start fighting the boss. DPS DPS DPS. At one point he burrows into the ground and some of his buddies show up. There are a couple of elites which the tank handles. Meanwhile you keep DPS-ing the elites but as soon as some non-elite spiders show up, quickly take them down. Then switch back to the elites. During this time you will see the ground crack at random locations. If it happens below you, move at once. If you don't move, huge spikes will shoot up from the ground, impaling you for massive damage. I believe that's what killed our group member.
Once the elites are down, the boss surfaces and everybody resumes DPS on him. He does the same sequence 2 more times before he dies. This was a very cool fight for me, in which I had to pay attention to several things at once and I also had to stay on my toes and be prepared to move at any instant.
Here are the 3 achievements that I got in this heroic:
Former WoW player, current Diablo 3 fanatic, I love the finer things in life such as PC games, beer and computers. While playing a good game is a spiritual experience, blogging about it is almost equally rewarding.