Tooth and Claw Style:
lv. 2--Gain Improved Unarmed Strike as a bonus feat, and the ability to deal 1d6 + Str modifier points of lethal or subdual bludgeoning damage with a successful hit.
lv. 6--Unarmed damage upgrades to d8, ability to make a Flurry of Blows.
lv. 11--Unarmed damage upgrades to d10, threaten a critical with an Unarmed Strike on a 19 or 20.
Quick Reaction Style
lv. 2--Gain the Improved Initiative feat.
lv. 6--Gain the ability to reroll Initiative Wisdom modifier times per day (minimum 1/day).
lv. 11--Gain the ability to act Hasted for a number of rounds per day equal to Wisdom modifier (minimum 1 round).
Strike from the Shadows Style
lv. 2--Sneak Attack +1d6
lv. 6--Sneak Attack +2d6
lv. 11--Sneak Attack +3d6
Foe Hunter Style
lv 2--Gain the ability to make a Smite attack, gaining a +4 bonus to the attack roll and dealing bonus damage equal to the Ranger's class level, against a favored enemy once per day.
lv 6--You may now use the Smite attack twice per day.
lv 11--You may now use the Smite attack three times per day.
Swift Runner Style
lv 2--Gain the Run feat.
lv 6--Gain a +10' bonus to your base speed.
lv 11--The bonus to your base speed increases to +20'.
Harmony with Elements Style
lv 2--Gain Energy Resistance 2 against every element.
lv 6--Your Energy Resistance improves to 5.
lv 11--Gain a +2 bonus to saving throws against spells with a descriptor of Fire, Acid, Cold, Air, Lightning, Earth, Water, or Sonic.
Acrobatic Combat Style
lv 2--Gain Tumble as a class skill, and a +2 bonus to all Jump and Tumble checks.
lv 6--Gain the ability to make an Acrobatic Attack by leaping at an opponant at least 10 feet away and then attacking with a +2 bonus to your attack and damage rolls.
lv 11--When you make an Acrobatic Attack, your bonus improves to +4.
And things like that.