Hampering

Source Guns & Gears pg. 17
A weapon with the hampering trait includes a disruptive limb or flange. You can use an Interact action to thrash the weapon in a square within the weapon’s reach. That square becomes difficult terrain until you attack with the weapon, move, would otherwise stop thrashing it, or at the beginning of your next turn.

Weapons

Donchak, Whip Claw