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Comment by Maliander

Razorscale can be brought to the ground by letting the friendly dwarves repair the Harpoon Guns. She will no longer fly up once her health is reduced to 50%. As long as Razorscale is on the ground, she will use Flame Breath, dealing 13125 to 16875 damage in a frontal cone. Bring Dark Rune Guardian dwarves to low health and drag them into this cone to kill them.

The Dark Rune Guardians only spawn when Razorscale's is in the air, so they will have to be offtanked until ground phases. Note that the achievement can be done incrementally: each Flame Breath kill counts towards the achievement and the counter never resets.

To not let the offtank eat the Flame Breath, the Main Tank could taunt a few off the offtank before Flame Breath is cast.

Comment by 188376

I was unsure how this achievement worked, so while holding a few adds when Razorscale was grounded I dragged them in front of her, waiting for her breath.

It seems that this "Deep Breath" is not the Flame Breath as it did no damage to me and no damage to the dwarves.

Comment by 54693

Does anyone know if you have to kill all 25 dwarves in the same attempt, or can it be over multiple attempts?

Comment by 222630

When starting this event we would have two tanks.

Tank One would pick up all the adds up when they spawned and tank them at Point A as shown below. Tank Two would taunt off all the Dark Rune Guardians and tank them in the center at Point B.

Tank One will then tank all the Dark Rune Watcher and Dark Rune Sentinel that spawn so that they can be DPS'd down by the raid.

Once both of the turrets are ready to be fired, have Tank Two go activate them and drop Razorscale. -Do not switch DPS Razorscale- Use Single Target DPS (avoid DoT effects) and bring all the Dark Rune Guardians down to less than 15,000 HP. Right before the ground phase ends Razorscale will Flame Breath the area directly in front of him.

*Note: Only the Dark Runed Guardians will count for this achievement.*

Stairs ______
v / \ Add Spawn Area
----- |* | ^
||| | B • A| |
----- |* | v
\______/ Add Spawn Area

* = Turret
A = Main Add Tank
B = Main Guardian Tank
• = Center of Circle

It will take you multiple tries to get this - First Time, we got one. Second time we got 8 and the third time we got the remaining 16. Just takes some practice with juggling adds. The counter does not reset at all and you will get the achievement without killing Razorscale.

This same strat can be applied to heroic with more tanks since you will have more adds. The breath damage from heroic does 17k-22k instead of 15k.

Comment by MadSouleu

Another good hint - turn off Retributuion aura, Thorns etc while trying this, so dwarves can't kill themselves.
Be aware that NPCs around the place do some damage to the adds too

Comment by Ninoa

The criterium of this achievement is shown incorrectly on this page. You do not need to slay Razorscale.

Clicking the link will lead you to the correct NPC, the Dark Rune Guardian, instead of Razorscale.

Comment by Enquillion

You can heal the adds with Polymorph if they drop a little too low for comfort :)

Comment by 316035

WARNING: The vast majority of information on this page is NOT correct.
The frontal flame breath that Razor does just before flying back up into the air (the one that destroys the harpoon guns) DOES kill the Guardians and DOES count towards the achievement. The one she does later on in p2 also kills them and counts.

Comment by 93865

A very easy way to increase the margin for error with this achievement:

Allow Razorscale to hard enrage (takes about ten minutes from beginning the encounter). Her breath will hit far harder, so hard that it will oneshot whoever it hits and she will wipe the raid in short order - but it will also completely oneshot the adds.

If your raid is having difficulty coordinating this achievement, consider gathering up a large number of mobs at high health, then allowing the boss to enrage and oneshot them all.

Comment by 54028

@ Proteuz

That's why he said it will wipe the raid. The point is though it's a controlled wipe, not with the intent of defeating the boss, but with the intent of completing the achievement. This is no different from guilds knocking out Gonna Go When The Volcano Blows in an organized manner by having ranged dps do naked deaths one week, melee the next, and splitting tanks/healers between the two weeks.

Comment by 336631

As of this post, her enrage timer is 15 minutes from starting the encounter rather than the 10 minutes mentioned above.

That's plenty of time to gather 25 Guardians in one attempt.

Comment by 558249

Could you just get some on first try,wipe and go again?(im not totally sure if thats what the above comment said)

Links

Iron Dwarf, Medium Rare (10 player)

Defeat 25 Dark Rune Guardian Dwarves with Razorscale's Flame Breath in 10-player mode.

Criteria

	Razorscale slain (25)

NPCScan

Information and Addon Downloads for NPCScan

/npcscan add 33388 Razorscale (Dark Rune Guardian)

Guides

Ulduar Achievements

Iron Dwarf, Medium Rare (10 player)

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NPCScan

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