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