Striker
Source Player Core pg. 129
You specialize in hand-to-hand combat and prefer to fight with your fists or lightweight melee weapons, rather than guns. Whether you're a daredevil who lives for the thrill, a martial artist who likes to show off, or an assassin who kills with a personal touch, you take the fight to your foes and use your body as a weapon. You're trained in Athletics. You gain a skill feat for Athletics.
Exploit
You have expert proficiency with one-handed melee weapons and unarmed attacks with the agile or finesse traits instead of with martial guns. Whenever you increase your proficiency with martial guns, you instead increase your proficiency with one-handed agile and finesse melee weapons, agile and finesse unarmed attacks, and simple guns.
In addition, when you Aim, you can Aim with and apply the benefits to a one-handed melee weapon or unarmed attack with the agile or finesse trait rather than with a ranged weapon. Treat any one-handed melee weapon or unarmed attack with the agile or finesse trait as a gun for purposes of meeting the requirements of operative feats. Instead of making a ranged Strike with an operative feat, you can make a Strike with an one-handed melee weapon or unarmed attack with the agile or finesse trait.
You gain the Reactive Step reaction.
In addition, when you Aim, you can Aim with and apply the benefits to a one-handed melee weapon or unarmed attack with the agile or finesse trait rather than with a ranged weapon. Treat any one-handed melee weapon or unarmed attack with the agile or finesse trait as a gun for purposes of meeting the requirements of operative feats. Instead of making a ranged Strike with an operative feat, you can make a Strike with an one-handed melee weapon or unarmed attack with the agile or finesse trait.
You gain the Reactive Step reaction.
Reactive Step [reaction]
Source Player Core pg. 130
Trigger A creature within your reach leaves a square during a move action it’s using.
You’re able to move deftly around your foes, getting out of tricky situations or managing to put yourself into a place where you hold the advantage. You Step up to twice directly toward the triggering creature.
Enhanced Exploit9th
You find yourself able to overwhelm foes that you study. You gain the Overwhelming Strike free action.
Overwhelming Strike [free-action]
Source Player Core pg. 131
Trigger Your Strike hits a creature you’ve designated as your mark and deals damage.
The target becomes your choice of enfeebled 1, off-guard, or suppressed until the end of your next turn. That creature becomes immune to Overwhelming Strike until the end of your next turn.