TC Chapter 3 Surface & TC:DC Chapter 4 Storm "GET HELP" billboard building After spider switch that opens roller door No armor: Full Health or 19/20 Health (risky)

wedge into corner, face vent, look down, crouch

throw "Small Explosive"

un-crouch, walk towards vent, crouch (or evade while crouched into vent)

turn 180°, un-crouch, walk slightly angled into corner only holding forward

[Boom] (still holding forward) press evade