pf2e.fyi
From Pathfinder Lost Omens Character Guide, which isn't enabled.

Impassable Wall Stance

FEAT 8
UNCOMMONCHAMPIONFIGHTERSTANCE
Activity 1 action
Prerequisites Reactive Strike

You refuse to let foes past your guard. As long as you are in this stance, when you critically hit with an Reactive Strike triggered by a move action, you disrupt that move action.

Pathfinder Lost Omens Character GuideOGL