For the Less-rabi achievement what we did was slowly get the boss to 40% then stop DPS till he cast a transform. Then we had our war shield bash the cast, popped Bloodlust, and blew up the rest of his HP before he could get another cast off.

Shadow priest
Resto Sham
Prot war
BM hunter
Ele Sham

We were getting casts every couple second by that point, we'd interrupt one and two seconds later he'd cast again.

I'm honestly not sure what's going on with it because it seems like not many other people are having issues with this one.

My guess is that your elemental shaman is interrupting most of the casts. Earth shock will only lock his cast for 2 seconds.
Rather have the mage(8 seconds lock) or the warrior(6 seconds lock) interrupting below 40%.

You realize that you said that a heroic 5-man achievement isn't that hard in 25-man raid gear in a group with no healer, right? I mean I understand what you're saying and where you're coming from, but it's this kind of evidence that proves that this particular achievement is so incredibly overtuned that they'll be fixing it. I'm not attacking you, this is the way everyone seems to be doing it, but achievements seem to me to be something that at the very least are supposed to be accomplished with a semi-standard 1 tank 1 healer 3 DPS group setup. Having to go to such contortions to be able to complete it doesn't make it easy enough with or without gear, it makes it stupidly stringent to complete.

We did this with a healer. Requires a luck interrupt around 15-20%.

It's literally a .3 second cast at that point and isn't even latency friendly.

The point of my post was that gear > RNG. Yes i also think that this achivement is overtuned, and yes i know that it's not with a standard group (i'm usually the healer of that group), but really, this achivements don't give you epics, don't give you anything valuable really, why they can't be dificult? This achivements are a challenge for hardcore players, maybe this one is overtuned, but i really think that they must design some achivements like this one, so hardcore people enjoy doing heroics and trying diferent strategies on them.

Going through the Wowhead comments for the achievement indicates that the speed of his cast is affected by his current HP, not the number of casts.

That points toward a strategy of getting comfortable with your DPS for the first half of the fight, saving your Mage's 8 second lockout Counterspell for a final interrupt around 35%, then burn him down the rest of the way.

No, we are both talking about [Gotta Go!] Azjol Nerub Achivement.

I was referring to dssurge. Your post didn't exist when i replied

I want to know how you could have even possibly burned 25% of Anubs HP in the burrow animation (which lasts 2 seconds) since you said you did it without him casting.

We burned him from 100% to 4X% on the first one, without cooldowns, we didn't know he was too low when he burrowed, we thout if was another fail and we were going to wipe. When he gone up again, he was at 43% we just Berserk + Recklessnes + Bloodlust + Bestial Wrath + Adrenaline Rush and finished the fight. Really, the animation is more than 2 secs, it's like 4 secs starting when he drops 25% until he stops autoattacks and start burrowing. Also extra DPS from Deep wounds + Deadly Poison when burrowed first time helped.

For people that is trying to do this achivement, do not bring casters, with melee the casts do not stop when burrowed, and can attack 1 or 2 more secs when he is burrowing down.

If someone else needs help or want the armory links of the gear PM me.

I absolutely agree that achievements can and should be difficult. However, I don't think the correct definition of difficult for them is "brute force", which is the most common solution to Gotta Go! Watch Him Die, Respect Your Elders, even the Oculus Void achievements are all much better examples. These are achievements which require coordination and creative thinking to complete, not revamping your group far outside the standard group and having gear do all the work for you. Almost all the heroic achievements tend towards creative or non-standard ways to beat a boss that make you think about what you're doing instead of just tank and spanking. Gotta Go! does not do that; it tells you to stack certain specific classes to take advantage of cast time debuffs and remove your healer to increase DPS beyond what should be possible in a 5 man instance. That's my issue, not that it's difficult.

And that's why the Oculus "Void"-Achievments are likely the best out there, you can't win them with gear. (Except maybe if you try to use a normal healer instead of a green drake..... if that works who knows.)

All in all these achievments sure are the best way for us to find bugs in Heroic boss encounters and they give the term "creative use of game mechanics" a whole new meaning.

It Works, A paladin with bubble to p2 of the dragon or a healer with SS can do the achivement without emerald drake

From personal experience, you can definitely heal the drakes from the ground if you get dismounted (you won't get credit for Experienced Drake Rider though).

My advice:

DPS him steadily to around 35% and interrupt his cast. You'll probably get one cast at around 80%, then one at 35%. If you find you arent getting quite to 35% by second cast, just interrupt the first cast right at the end of the timer. Pop lust at around 50% so you dont waste a GCD during the burn period.

So you're at 35%, lusted, and a cast goes off. Have your longest lockout player interrupt it (rogue, prot warrior, mage, etc). Everyone should have popped their cooldowns at around 40% anticipating this cast. Go nuts on him and see how low you get him to before he casts again. You might be able to kill him outright, or you may keep getting ~5-10% casts. After a few wipes you'll have a decent idea as to when to guess the interrupt. Using an /in macro on the 35% lockout cast can help you know when you need to throw all your interrupts at him.

Dont attempt to catch a 0.2 second cast with 200 latency. Just get into a rhythm an know when to dps/interrupt-guess. Dont bother healing sub 40% obviously.

We ran through heroic Gundrak last night for the first time, and something very odd happened to us on Moorabi. The fight was literally over in under 5 seconds. Recount had most of us doing over 20,000 DPS - he literally went from 90% to dead in a few seconds. The first 10% seemed normal, but after we interrupted his first cast, he just went down very, very quickly.

Obviously we encountered some sort of bug. Has this happened to anyone else, and does anyone know what causes it? We were in a rush, so I figured I'd just check the combat log later, but afterwards I realized I didn't have logging on.

Also for Consumption Junction, you can take your time and LoS the cast using the pillars at the top of the stairs. He casts it every ~10-15 seconds, so just DPS for a bit, run out till cast, dps for a bit, etc.

Did you have a warrior tank? They are quite buggy at the moment and there dps is sometimes really crazy (don't know, how it comes):

If you want an example, here is an almost 700k shieldslam: Wow Web Stats

We've also had that happen to at least one of our prot warriors, and also to a DK tank of ours. No idea what causes it yet...

Nope, protection paladin (me) was tanking. I didn't notice any abnormally high hits via SCT, although Recount had me at over 20,000 dps for the fight.

Other party members were 2 BM hunters, a shadow priest, and a resto shaman.

Again, it's a known bug that happens from time to time. You basically end up hitting for ridiculous amounts of damage. It can theoretically happen to anyone, but a lot of people notice it on Protection Warriors. I've personally had it happen to me twice within the span of about 5-6 minutes on Patchwerk attempts.