Insults were great and all, but they didn't always give the results you wanted when deployed against beings who possessed enough discipline to see through simple provocation.
Achilles had spouted just a single calculated insult about their hypocrisy, and in the next moment Atraides raised his hands with gesture that stopped the other Commanders from reacting while he himself tightened the rings binding Achilles.
The force he applied went far beyond simple restraint, and he twisted Achilles's body completely with casual cruelty that broke multiple bones simultaneously!
The outline of Achilles's form became distorted into the shape of a pretzel as his spine bent in ways that biology should not permit, and the sound of cracking bone echoed across the sanctuary.
"..."
Achilles made no sound despite the devastating damage, recognizing that showing weakness would accomplish nothing useful.
