Full list of all 83 Saints Row: The Third achievements. It takes around 50-60 hours to unlock all of the achievements in the base game on Windows.
The base game contains 53 achievements, and there are 3 DLC packs containing 30 achievements.
Complete ALL Challenges.
Kill all of the hitman Assassination targets.
Steal and deliver all Vehicle Theft targets.
Fully upgrade one Weapon in each slot.
Complete all City Takeover gameplay in the Stanfield district.
Complete all City Takeover gameplay in the entire city of Steelport.
Destroy all Gang Operations in Steelport.
Complete all City Takeover gameplay in the Downtown district.
Complete all City Takeover gameplay in the Carver Island district.
Complete all instances of Trail Blazing.
Complete all instances of Activities in Co-op.
Complete all instances of Mayhem.
Complete all instances of Insurance Fraud.
Complete all instances of Escort.
Complete all instances of Heli Assault.
Complete all instances of Snatch.
Complete all instances of Professor Genki's Super Ethical Reality Climax.
Find 100% of all Collectibles.
Spend over 30 hours in Steelport.
Customize 10 vehicles.
Kill 50 brutes.
Taunt AND/OR Compliment 50 gang members.
Find 25% of all Collectibles.
Complete Act 3 in one way.
Complete Act 3 in another way.
Beat all Missions in Co-op.
Complete 'Zombie Attack'.
Kill 25 Gang Members each with 'the Penetrator' AND the Fart in a Jar.
Complete 'Murderbrawl XXXI'.
Create and share a character online.
Upgrade one Stronghold to its full glory.
Complete Act 2.
Complete 'http://deckers.die'.
Complete 'STAG Party'.
Complete all City Takeover gameplay in the New Colvin district.
Complete all instances of Trafficking.
Hijack 50 vehicles - Dukes style.
Complete all instances of Tank Mayhem.
Do your first nutshot AND testicle assault.
Complete Act 1 in one way.
Complete 'The Ho Boat'.
Complete your first Challenge.
Explore every hood in Steelport.
Kill 1000 Gang Members.
Complete all instances of Guardian Angel.
Play for at least 2 hours as a male character AND 2 hours as a female character.
Play SR3 Co-op for 5 hours.
Complete Act 1 in another way.
Complete 'We've Only Just Begun'.
Buy your first Upgrade from the Upgrade Store.
Complete 'Party Time'.
Complete 'I'm Free - Free Falling'.
Complete 'When Good Heists...'.
Complete all activity instances in Genki Bowl VII.
Kill all of the rooftop mascots (in a single instance of Sad Panda Skyblazing).
Land on Magarac Island (in Sad Panda Skyblazing).
Fly through all of the rings (in a single instance of Sad Panda Skyblazing).
Roast 50 peds with the car’s flamethrower (in a single instance of Super Ethical PR Opportunity).
Throw 5 mascots into the water (in a single instance of Apocalypse Genki).
Finish both instances of Apocalypse Genki.
Cause $150,000 worth of damage in a single Sexy Kitten Yarngasm combo.
Destroy a mouse ATV during Sexy Kitten Yarngasm.
Destroy 5 chase vehicles (in a single instance of Super Ethical PR Opportunity).
Kill 7 Space Amazons with melee attacks.
Complete all missions for Gangstas in Space.
Perform all vehicle stunts with the Aegean.
Destroy 10 enemy spacecraft with the Aegean while filming.
Kill Space Brutina.
Collect all 6 hidden clapboards.
Kill 35 Space Amazons with the Laser Pistol.
Destroy all enemy spacecraft during the chase scene.
Kill 15 cameramen.
Land on the Parachute Target during the rescue scene.
Kill a Brute using only melee damage while under the influence of Saints Flow.
Hold Your Position at Technically Legal using only melee attacks.
Complete all missions for "The Trouble With Clones".
Prevent Johnny Tag from taking damage on the Magarac Bridge.
Shoot down a helicopter with a Saints Flow fireball.
Complete mission 'Tour de Farce'.
Destroy 5 Steelport Guard vehicles during mission 'Tour de Farce'.
Spray 25 rabid fans with the Swarmitron.
Complete mission 'Weird Science'.
Destroy 45 Police and Swat Vehicles while protecting Jimmy's car.