You become so confident in certain skills that you can use them reliably even under adverse conditions. When attempting a skill check with a skill in which you have the Skill Focus feat, you can take 10 even if stress or distractions would normally prevent you from doing so.

You gain a special power depending on the specialization you chose at 1st level.

You can trick or startle a foe and then attack when she drops her guard. As a full action, you can move up to your speed. Whether or not you moved, you can then make an attack with a melee weapon with the operative special property or with any small arm. Just before making your attack, attempt a Bluff, Intimidate, or Stealth check (or a check associated with your specialization; see page 94) with a DC equal to 20 + your target’s CR. If you succeed at the check, you deal 1d4 additional damage and the target is flat-footed. This damage increases to 1d8 at 3rd level, to 3d8 at 5th level, and by an additional 1d8 every 2 levels thereafter. You can’t use this ability with a weapon that has the unwieldy special property or that requires a full action to make a single attack.

If you succeed at a Reflex save against an effect that normally has a partial effect on a successful save, you instead suffer no effect. You gain this benefit only when unencumbered and wearing light armor or no armor, and you lose the benefit when you are helpless or otherwise unable to move.

As you gain experience, you learn special tricks called operative exploits. You learn your first operative exploit at 2nd level, and you learn an additional exploit every 2 levels thereafter. If an operative exploit allows a saving throw to resist its effects, the DC is equal to 10 + half your operative level + your Dexterity modifier. If it requires an enemy to attempt a skill check, the DC is equal to 10 + 1-1/2 × your operative level + your Dexterity modifier. The list of operative exploits appears on page 95. You cannot learn the same exploit more than once unless it specially says otherwise.

As long as you are unencumbered and wearing light armor or no armor, your land speed increases by 10 feet. At 9th level, your land speed instead increases by 20 feet, and at 15th level, your land speed instead increases by 30 feet.

You gain the Weapon Specialization feat as a bonus feat for each weapon type with which this class grants you proficiency.

When you hit an enemy with a trick attack, you can make the creature flat-footed or off-target until the beginning of your next turn. You might learn exploits that grant you additional options for your debilitating trick, but you can select only one option each time you hit with a trick attack.

You are immune to the flat-footed condition, and your opponent doesn’t gain any bonuses to attack rolls against you from flanking you or attacking you when you’re prone. Furthermore, covering fire and harrying fire don’t provide any advantage against you.

When making a full attack using only melee weapons with the operative special property or small arms, you can make up to three attacks instead of two.