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 ALL Challenges.
Customize 10 vehicles.
Steal and deliver all Vehicle Theft targets.
Spend over 30 hours in Steelport.
Kill all of the hitman Assassination targets.
Complete all City Takeover gameplay in the Downtown 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 Carver Island district.
Complete all City Takeover gameplay in the Stanfield district.
Upgrade one Stronghold to its full glory.
Complete Act 3 in one way.
Complete Act 3 in another way.
Beat all Missions in Co-op.
Complete 'Zombie Attack'.
Complete 'Murderbrawl XXXI'.
Complete Act 2.
Complete 'http://deckers.die'.
Complete 'STAG Party'.
Complete 'The Ho Boat'.
Fully upgrade one Weapon in each slot.
Complete all City Takeover gameplay in the New Colvin district.
Kill 25 Gang Members each with 'the Penetrator' AND the Fart in a Jar.
Kill 50 brutes.
Find 100% of all Collectibles.
Play for at least 2 hours as a male character AND 2 hours as a female character.
Explore every hood in Steelport.
Taunt AND/OR Compliment 50 gang members.
Do your first nutshot AND testicle assault.
Find 25% of all Collectibles.
Create and share a character online.
Complete all instances of Activities in Co-op.
Complete your first Challenge.
Complete all instances of Guardian Angel.
Complete all instances of Insurance Fraud.
Complete all instances of Heli Assault.
Kill 1000 Gang Members.
Complete all instances of Mayhem.
Complete all instances of Trail Blazing.
Complete all instances of Snatch.
Complete all instances of Professor Genki's Super Ethical Reality Climax.
Complete all instances of Escort.
Play SR3 Co-op for 5 hours.
Complete all instances of Trafficking.
Complete all instances of Tank Mayhem.
Hijack 50 vehicles - Dukes style.
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...'.
Kill all of the rooftop mascots (in a single instance of Sad Panda Skyblazing).
Complete all activity instances in Genki Bowl VII.
Fly through all of the rings (in a single instance of Sad Panda Skyblazing).
Land on Magarac Island (in Sad Panda Skyblazing).
Destroy a mouse ATV during Sexy Kitten Yarngasm.
Cause $150,000 worth of damage in a single Sexy Kitten Yarngasm combo.
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).
Finish both instances of Apocalypse Genki.
Throw 5 mascots into the water (in a single instance of Apocalypse Genki).
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.
Kill 7 Space Amazons with melee attacks.
Destroy all enemy spacecraft during the chase scene.
Kill 15 cameramen.
Land on the Parachute Target during the rescue scene.
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.
Kill a Brute using only melee damage while under the influence of Saints Flow.
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.