[Leytur]

I see a lot of good strats already on the boards. I'm looking for the hotspots that are the most often encountered reasons for failure. So far I have noticed:

KT's ice block
4 Horsemen chain 1 shot
Razuvious MC snafu

Where are the other places where, if you've failed, have been the common reasons?

[Tatt]

People pulling aggro or generally being stupid on Gluth before the tank has control of him. Heigan. People missing the jump on Thadd, then running back in before they have a charge.

[Pyrea]

I've heard that 4hm does not, actually, count towards the undying/immortal, so a death due to chaining the holy bolt would not cost you the achievement. You can reset the ID at the first boss by soft resetting the instance (e.g. for razuvious).

If I had listened to the hunter I would have got undying on saturday (he hadnt done the gluth kiting before and I didnt consider the undying a remote possibility with 8 people, turned out to be the only death in the instance)

[Kaad]

Thaddius and Heigan give my guild trouble on 10 man.


and we've given up on 25 man... it's just impossible for us to not mess around =P

[Squashed]

I've heard no indication 4h does not count for undying. It does NOT count for the undermanning-achievement.

Gluth can be very dangerous as well. We've had 2 deaths during decimate before, one was a druid that shifted from bear->cat right as the decimate went off, did damage based on bear HP. Second was suposedly when an HP buff wore off a player at the same time as decimate, was just enough to kill.

Sapphiron - DCs - > deep breath. In addition, this is one of the hardest fights in Naxx for warrior/druid tanks to pickup aggro on (based on potential zero-rage on pull). Misdirects should always be used, and DPS should lay off for the first 5 seconds.

[Tengaaris]

Ret paladins judging Seal of Blood to kill zombies after Decimate....

[Mookey]

Kill gluth without
1) imps
2) commanding shout
3) seal of blood

On the other hand... just go trough whole list of stuff on the link bellow, it's pretty much the same, Razuvious fight and KT mind control is what makes Immortal much harder than Undying.
TheImmortal - StratFu

[Muffin Man]

Source: Tengaaris Ret paladins judging Seal of Blood to kill zombies after Decimate....

Life tap after a Decimate too. Our resident lock did that once (we weren't going for Undying so we just laughed at him).

Construct is just nasty though. People looting Grobbulus and dying to poison I believe will cause you to fail.

Looting Thaddius and blowing up from charges I think will also cause you to fail.

[kolben]

I learned the hard way to pay very close attention to the decimate timer and switch to SoC when it's about up, and not to go back to SoM until i'm back at full. Blizzard really should remove the recoil on SoB/SoM, but that's another topic.

If you have a DPS DK in your raid, don't let them Death Grip the Abominations into the center for phase 1 of Kel'Thuzad. Eventually an untanked/undertanked abom will kill someone.