The ambusher fighting style focuses on stealth, tactical positioning, and superior reflexes to gain an edge. You must have Stealth as a class skill to select this fighting style.
You watch for danger and respond swiftly. You gain Improved Initiative as a bonus feat. Whenever you act before an enemy during the first round of combat, you gain a +1 insight bonus to weapon attack rolls against that enemy until the beginning of your next turn.
When you succeed at a Stealth check to hide opposed by a target’s Perception check or when you have improved or total cover against a target, as a full action you can make one ranged attack against that target that deals additional damage equal to half your Dexterity bonus.
When an enemy attacks you before you have taken any actions in combat, you can use your quick reflexes to retaliate. As a reaction, you can spend 1 Resolve Point to make one attack with a ranged weapon you are wielding immediately after the enemy’s attack.
When you attempt a Stealth check to hide from an enemy that can see you, you gain a +4 insight bonus to the check if you can move into improved or total cover. In addition, whenever you attempt a Stealth check to hide while sniping, the penalty to your Stealth check is only –10.
As a full action, you can make one attack that, in addition to dealing its normal damage and effects, causes the target to gain the off-target condition until the end of its next turn. You can also use this ability as a standard action against any creature that is flat-footed.