Twin Parry 
Feat 4FighterRangerSwashbucklerSource Advanced Player's Guide pg. 90,
Core Rulebook pg. 147 2.0Archetype Dual-Weapon Warrior*
Requirements You are wielding two melee weapons, one in each hand.
* This archetype offers Twin Parry at a different level than displayed here.
You use your two weapons to parry attacks. You gain a +1 circumstance bonus to AC until the start of your next turn, or a +2 circumstance bonus if either weapon has the parry trait. You lose this circumstance bonus if you no longer meet this feat’s requirement.
Archetype Use
This feat can be used for one or more Archetypes in addition to the listed Classes. When selected this way, the feat is not considered to have its class traits.
Twin Parry Leads To...
Twinned Defense (Fighter),
Twinned Defense (Swashbuckler)