Rogue

Sneak Attack
Any time the rogue's target would be denied a Dexterity bonus to AC (whether the target actually has a Dexterity bonus or not), or when the rogue flanks the target, the rogue's attack deals extra damage. The extra damage is +1d6 at 1st level and an additional 1d6 every two levels thereafter. Should the rogue score a critical hit with a sneak attack, this extra damage is not multiplied.

Ranged attacks can only count as sneak attacks if the target is within 30 feet. The rogue can't strike with deadly accuracy from beyond that range.

With a sap (blackjack) or an unarmed strike, the rogue can make a sneak attack that deals subdual damage instead of normal damage. The rogue cannot use a weapon that deals normal damage to deal subdual damage in a sneak attack, not even with the usual –4 penalty.

A rogue can only sneak attack a living creature with a discernible anatomy. Any creature that is immune to critical hits is also not vulnerable to sneak attacks. The rogue must be able to see the target well enough to pick out a vital spot and must be able to reach a vital spot. The rogue cannot sneak attack while striking a creature with concealment or striking the limbs of a creature whose vitals are beyond reach.

Traps
Rogues (and only rogues) can use the Search skill to locate traps when the task has a Difficulty Class higher than 20. Finding a nonmagical trap has a DC of at least 20, higher if it is well hidden. Finding a magic trap has a DC of 25 + the level of the spell used to create it.

Rogues (and only rogues) can use the Disable Device skill to disarm magic traps. A magic trap generally has a DC of 25 + the level of the spell used to create it.

A rogue who beats a trap's DC by 10 or more with a Disable Device check can generally study a trap, figure out how it works, and bypass it (with his party) without disarming it.

Evasion
At 2nd level, a rogue gains evasion. If exposed to any effect that normally allows a character to attempt a Reflex saving throw for half damage, the rogue takes no damage with a successful saving throw. Evasion can only be used if the rogue is wearing light armor or no armor. It is an extraordinary ability.

Uncanny Dodge
At 3rd level and above, she retains her Dexterity bonus to AC (if any) if caught flat-footed or struck by an invisible attacker.

At 6th level, the rogue can no longer be flanked. Another rogue at least four levels higher can still flank.

At 11th level, the rogue gains a +1 bonus to Reflex saves made to avoid traps and a +1 dodge bonus to AC against attacks by traps. At 14th level, these bonuses rise to +2. At 17th, they rise to +3, and at 20th they rise to +4.

Special Abilities
On achieving 10th level and every three levels thereafter (13th, 16th, and 19th), a rogue chooses a special ability from among the following:

Crippling Strike
When the rogue damages an opponent with a sneak attack, the target also takes 1 point of Strength damage.

Defensive Roll
Once per day, when a rogue would be reduced to 0 hit points or less by damage in combat (from a weapon or other blow, not a spell or special ability), the rogue can attempt to roll with the damage. She makes a Reflex saving throw (DC = damage dealt) and, if successful, takes only half damage from the blow. The rogue must be aware of the attack and able to react to it in order to execute the defensive roll — if the Dexterity bonus to AC is denied, the rogue can't roll. Since this effect would not normally allow a character to make a Reflex save for half damage, the rogue's evasion ability does not apply to the defensive roll.

Improved Evasion
The rogue takes only half damage on a failed save.

Opportunist
Once per round, the rogue can make an attack of opportunity against an opponent who has just been struck for damage in melee by another character. This attack counts as the rogue's attacks of opportunity for that round. Even a rogue with the Combat Reflexes feat can't use the opportunist ability more than once per round.

Skill Mastery
The rogue selects a number of skills equal to 3 + Intelligence modifier. When making a skill check with one of these skills, the rogue may take 10 even if stress and distractions would normally prevent the rogue from doing so. The rogue may gain this special ability multiple times, selecting additional skills for it to apply to each time.

Slippery Mind
If a rogue with a slippery mind is affected by an enchantment and fails the saving throw, 1 round later the rogue can attempt the saving throw again. The rogue only gets this one extra chance to succeed. This is an extraordinary ability.

Feat
A rogue may gain a feat in place of a special ability.