[Pet] Kill Eroded Cliffdweller easy with a pet!

[Piju]

Hey all, I ran around the Timless Isle to farm all the items for the achievement and also killed the Eroded Cliffdweller mobs for their item.
I found out that if you let your pet stay on a ranged position and and let your character stand in the red circle, the Cliffdweller will continuously throw his boulders at your pet with ~ 13k dmg and you can burn it down without having to look out for anything. Sometimes, like once per mob they are stomping and you have to move away a bit. Your pet has to be on his aggro table!

Summary:
Let your pet hit the mob once
Place Pet on a ranged Position
Place your character in meele range
Pet gets hit by all the boulders for <15k
Roflstomp all the Cliffdwellers