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For everyone having trouble getting hit by the quakes, here's what worked for me.
Make a macro of /kneel or /sit and put it on something you can spam (I put it on "X"). Grom uses his skullcracker twice. Once at 66%hp and once at 33%hp. I figured my damage was way too high for him to do controlled bits of damage before he reaches 66% and 33% so I unequiped my weapon.
As you enter the fight start spamming your /kneel or /sit macro. You will notice that ALL quakes hit you now providing an Angered Earth with each quake. Once you have 5 AE's up (easier to see when enemy health bars are shown, I suggest you activate that in your UI settings) hit grom with anything that gets him just below 66%. He will use his skullcracker and kill the 5 AE's.
Once he killed the AE's rinse and repeat all the above and when you have a 2nd batch of 5 AE's up hit him to just below 33%. He skullcracks again and another 5 AE's go down. Kill Grom once they are down and enjoy your new beautiful mount!
Achievements › Dungeons & Raids › Cataclysm Dungeon
Achievement
Crushing Bones and Cracking Skulls
Defeat Rom'ogg Bonecrusher after using his Skullcracker ability to kill 10 Angered Earth elementals in Blackrock Caverns on Heroic Difficulty.
Crushing Bones and Cracking Skulls is a 10 point achievement in Cataclysm Dungeon. Its criteria ask you to defeat 1 creature in Blackrock Caverns.
How to Earn
How to Complete
1 criterion from the current game data.
Defeat these creatures (1)
Kill each creature listed.
- Rom'ogg Bonecrusher
Details
- Category
- Dungeons & Raids › Cataclysm Dungeon
- Points
- 10
- Faction
- Both factions
- Requirements
- 1 criteria line
- Instance
- Blackrock Caverns
- Instance type
- Dungeon
- Expansion
- Cataclysm
About Blackrock Caverns
Rumors suggest that Deathwing himself carved out the subterranean labyrinth that allows the Twilight's Hammer to secretly transport elementals from the majestic Mount Hyjal to Blackrock Mountain. A vital hub of this shadow network is Blackrock Caverns, site of the cult's blistering forge and some of its most heinous experiments, including the transformation of cultists into twilight dragonkin.
From the in-game Adventure Guide.
Where to Earn It
Crushing Bones and Cracking Skulls is earned inside Blackrock Caverns, a dungeon. The entrance is marked below.
The entrance to Blackrock Caverns is in Blackrock Stronghold, Burning Steppes at 27.5, 27.8.
Entrance 27.5, 27.8Burning Steppes, from the game’s own world map art. The framed marker is the Adventure Guide entrance.
Part of
Meta achievements that count this one among their criteria.
- Glory of the Cataclysm Hero 25 points
More like this
Other achievements in Cataclysm Dungeon.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
For anyone crazy out there such as myself thinking about soloing this achievement, don't bother. Quake only spawns 1 Angered Earth per player and it seems they die automatically after about a minute resulting in you having a maximum of three up for any Chains of Woe.
In short: 3 adds max times 2 Chains of Woe in the encounter = 6 adds killed max, 4 short of the achievement.
As of the 6.0.2 pre patch (and the time of me posting this) he seems to no longer summon the elementals when he casts Quake. We confirmed we were on Heroic and confirmed we were actually taking damage from the quake ability. We filed a bug report, but I wanted to post this in case anyone else was running into a similar issue.
EDIT: As of Halloween, patch notes state that it should be fixed!
Community notes from Wowhead · 415 comments
Top 3 shown aboveThe comments below were written by Wowhead users. They are community notes, not TheWoWDB comments. See them in context on Wowhead.
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