Sometimes, you just have day in which nothing can seem to go right. That day was yesterday. It started with a Heroic Halls of Stone run. Besides me there was a Rogue, a Warrior, my DK brother and my Pally friend. After waiting for ages to get in (Blizzard needs to build more instance servers), everything went smooth. Until Krystallus, the first boss. Krystallus is a boss that has borrowed all of his mechanics from an older boss: Gruul, from, well, Gruul's Lair. He does a knockback, which sends you flying only to give you a debuff afterwards that reduces your movement speed with increments of 20%. Once it hits the 100% reduction mark, you are turned to stone and he casts a spell called Shatter. Shatter deals damage to each player, but that damage only gets lethal when you are standing too close to another party member. The two people that we got randomly, the Rogue and the Warrior, died because they ran straight back in. Lucklily, all of the people needed to finish a fight (Tanks, Healers and some DPS) were still alive, so he went down quickly.
After getting those two back on their feet, we went on, deeper into the instance. As we pulled the first group in the corridor we had to take, the tank just about pulled them all. Needless to say, we all died. We also died on the constructs later on, because they cast a huge area of effect spell when they start to die. Unfortunately, our tank didn't have his best day. Or better yet, he had a fail-day. When you have 3 melee DPS in a group, you need to pay attention to where you drag the boss to. This particular boss, Maiden of Grief (yes, made after Maiden of Virtue from Karazhan), places a big black disc on the floor that hurts. So don't stand in them.
But the boss places multiple zones like that during the encounter and at a point, we were standing in the middle of them. So what does the tank do? He moves the boss. However, instead of moving her towards the open space in the front, in range of the healer, he moves her through all of the zones to the back. This left the melee peoples wondering why. that way we either had to take massive damage and die to reach the boss or walk around and drastically lower the DPS that way. Because the tank left the healer's range, he died and we finished the encounter with two men standing. Needless to say, we didn't get
[Good Grief].

At this point I already was yelling at the tank in the next room. That's the advantage of being family. You know where to find them. Still we had two bosses to go. The constructs wiped us a few more times on the way there. But the third boss isn't a boss. It's an event in which waves of enemies keep coming. After a while, you survived long enough and you get free loot. But we wanted an achievement aswell:
[Brann Spankin' New]. It actually went quite well, but the tank managed to let one enemy slip past to take a shot at the NPC. And seriously, ten seconds after the NPC was hit, the event was over. If the tank had seen the mob and pulled it, we all would have had an achievement. Great.
So we finally moved on to the last boss, which casts a debuff that makes you and everyone close to you take heavy damage. This is even bigger when you stand in his Lightning Ring, which causes that damage to be even bigger. And there is a machine, operated by the NPC from the third boss, that spewes enemies. He's just trying to help. Which kind of enemy comes out is linked to the boss' health. For an achievement we had to kill 5 Iron Sludges during the encounter. At about 50%, the machine makes Malformed Oozes, which were mistaken for Iron Sludges by the Warrior and the Rogue. The Iron Sludges didn't come and I had an idea: It had something to do with the oozes.
So I yelled: Leave the oozes alone for a bit. And indeed, the Sludges began to form. Unfortunately, we got too many of them and we wiped. And I got an angry healer, yelling at me that I should never say something like that again. Okay, but we know how we get sludges now.
In the next attempt, the tank decided to tank the boss right on top of the healer. We wiped. Then the rogue had to go, as he chartered a group to another Heroic instance. Instead of looking for another player, we just nuked the boss down and went home, without any achievements.
Later, I went to the Obsidian Sanctum and Utgarde Keep, which also failed miserably, but that's another story.