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Rubble and Roll (10 player)
Defeat Kologarn after causing at least 25 Rubble creatures to spawn in 10-player mode.
Rubble and Roll (10 player) requires you to defeat Kologarn after a cumulative total of at least 25 Rubble creatures have spawned during the fight in 10-player mode.
Enter Ulduar and Engage Kologarn
Enter Ulduar and begin the Kologarn encounter. Do not attack Kologarn directly — focus entirely on his arms for the duration of the fight.
Kill Arms to Spawn Rubble
Killing either of Kologarn's arms causes 5 Rubble creatures to spawn. Each killed arm also reduces Kologarn's health by roughly 15%, and a destroyed arm respawns after 15 to 30 seconds, allowing you to kill it multiple times.
Kill Rubble Adds Immediately
The Rubble creatures melee for 4k and cast Stone Nova, an AoE spell that applies a stacking +5% damage modifier, so kill them as soon as they spawn rather than letting them accumulate.
Repeat Until 25 Rubble Spawned
Continue killing arms and clearing the resulting Rubble adds until at least 25 Rubble creatures have spawned in total — they do not all need to be alive at the same time, only the cumulative spawn count matters.
Finish Off Kologarn
Once 25 or more Rubble creatures have spawned, attack and kill Kologarn directly to complete the achievement. Ensure at least one direct hit lands on Kologarn himself before he dies, or you will not receive kill credit and cannot loot his chest.
Tips
Avoid using high-damage legendary gear or abilities that could kill Kologarn through arm damage alone before you reach 25 Rubble spawns.
See the video guide for a visual walkthrough of the arm-killing rotation used to reach 25 Rubble spawns efficiently.