Assault on the Broken Precipice

• Location: Northwestern Nagrand by Highmaul, nearest flightmaster is [npc=87395].
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• Rewards: [currency=823 amount=800]
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• Related achievements: Broke Back Precipice, History of Violence
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• Related Reputation: Items can drop for [faction=1711]
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• Related Garrison Invasion: Goren Invasion!
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• Related Loot: [item=119389] from [npc=87846], [item=119370] from [npc=87837], [item=119405] from [npc=87788]

[h3 toc=false]Strategy and Mob Percentages[/h3]
In addition to killing regular mobs, elites, and rare elites, you can use the blue crystal [npc=88064] to transform into an ogron ([spell=175766]) and smash piles for quest completion. Red crystals can also be looted for the [spell=175750] buff.

[toggler id=11 hidden]Mobs that increase progress % per kill (click to view)[/toggler][div id=11 hidden][pad][pad]

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Defeat - Rare Elite  (14% each)
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Durg Spinecrusher

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Bonebreaker

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Defeat Vignette  (16.7% each)
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Pit Slayer

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Defeat Small Enemies  (1% each)
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Sledgebasher

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Arcanist Earthsmasher

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Pit Slayer's Trophy

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Defeat Tier 1 Enemies  (4% each)
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Defiant Drudge

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Brokyo

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Vizier Dar'gud

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Dominating Drudge

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Broken Drudge

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Defeat - Elite  (7.7% each)
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Bloodbash Ogrechucker

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Bloodbash Breaker

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Slave-Grinder

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Destroy Trophy (4% each)

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Recover Artifacts 

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I spent agonizing months waiting for one daily to complete the Securing Draenor achievement. I had no idea, you could do that manually through Scouting Missives. I am hoping this posts helps save some of you some time and agony.

Sergeant Crowler (A) and Sergeant Grimjaw (H) in your garrison sells the Scouting Missives. They are picked up as a quest items, and upon completion, turned in to Scout Valdez (A) or Shadow Hunter Ukambe (H), next to your daily mission table.

Also: you can complete a missive, even if you have already completed the daily from your garrison table for that day. I did Pillars of Fate (table) and then Iron Siegeworks (missive), back to back.

If you enter the area and don't get a progress bar, just keep killing guys. I had that happen to me, and after a few minutes I got the completion notice, so it was still counting them towards the goal.