Abilities 2 of Rock and Rumble 2

Unarmed

You trigger an Unarmed ability by attacking the intended target with an Unarmed Attack. If you do not have the Proficiency to use Unarmed Attacks, or that arm is Maimed, you cannot use the ability.

Disarm

Orn v4.0

You cannot use the affected item for 5 seconds. You do not drop your weapon.

You must release your grip on the affected item for five seconds. Items that are fastened or otherwise secured remain as such.

A Twin ability includes the "Twin" prefix as part of the tagline and is delivered by attacking two separate characters with separate weapons in either hand. Both characters hit are affected. If the same character is hit by both attacks, that character is only affected once. If this makes the target ambiguous (e.g., Twin Disarm on two different weapons or Twin Maim on two limbs), the affected character chooses which target is affected.