Abilities 17 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.

2 Hits

You suffer two hits worth of damage.

Pierce

A Pierce ability includes the "Pierce" prefix as part of the tagline and cannot be blocked, though it may be Deflected.