Experienced Robbers

Trigger A creature within the monster's reach uses a manipulate action or a move action, makes a ranged attack, or leaves a square during a move action it's using. Effect The monster attempts a melee Strike against the triggering creature. If the attack is a critical hit and the trigger was a manipulate action, the monster disrupts that action. This Strike doesn't count toward the monster's multiple attack penalty, and its multiple attack penalty doesn't apply to this Strike.

The tough robber leads an extra 1d6 precision damage to Off-Guard creatures.

When the experienced robber deals damage on a critical hit, the target is knocked back 10 feet and must succeed at a DC 20 fortitude save or be Stunned 1. On a critical failure, the target also falls Prone.