Krosovahn Mendesil isn't Off-Guard to creatures of 7th level or lower that are Hidden, Undetected, flanking, or using surprise attack.
Evasion
When Krosovahn Mendesil rolls a success on a Reflex save, he gets a critical success instead.
Surprise Attack
On the first round of combat, if Krosovahn Mendesil rolls Deception or Stealth for initiative, creatures who haven't acted are Off-Guard to Krosovahn Mendesil.
You're Next(emotion, fear, mental)
Trigger Krosovahn Mendesil reduces an enemy to 0 Hit Points
Effect After downing the foe, Krosovahn Mendesil menacingly reminds another foe that he's coming after them next. Krosovahn Mendesil attempts an Intimidation check with a +2 circumstance bonus to Demoralize a single creature that he can see and that can see him.
Trigger Krosovahn Mendesil rolls a critical hit against a creature
Effect All allies that can see Krosovahn Mendesil gain a +1 circumstance bonus to attack rolls until the start of Krosovahn Mendesil's next turn.
Effect: Brutal Rally
Gang Up
Any enemy is Off-Guard against Krosovahn Mendesil's melee attacks due to flanking as long as the enemy is within melee reach of both Krosovahn and one of his allies.
Quick Draw
Krosovahn Mendesil Interacts to draw a weapon, then Strikes with that weapon.
Sneak Attack
Krosovahn Mendesil deals an extra 2d6 precision damage to Off-Guard creatures
Pathfinder Society Scenario #5-03: Heidmarch HeistOGL