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.
Create and share a character online.
Steal and deliver all Vehicle Theft targets.
Upgrade one Stronghold to its full glory.
Spend over 30 hours in Steelport.
Complete ALL Challenges.
Customize 10 vehicles.
Taunt AND/OR Compliment 50 gang members.
Kill all of the hitman Assassination targets.
Complete Act 3 in one way.
Kill 50 brutes.
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.
Find 100% of all Collectibles.
Complete all City Takeover gameplay in the Carver Island district.
Kill 25 Gang Members each with 'the Penetrator' AND the Fart in a Jar.
Complete all City Takeover gameplay in the New Colvin district.
Fully upgrade one Weapon in each slot.
Complete all instances of Tank Mayhem.
Complete all instances of Activities in Co-op.
Complete all instances of Snatch.
Do your first nutshot AND testicle assault.
Complete all instances of Escort.
Complete Act 3 in another way.
Beat all Missions in Co-op.
Complete all instances of Mayhem.
Complete all instances of Professor Genki's Super Ethical Reality Climax.
Complete all instances of Trail Blazing.
Play for at least 2 hours as a male character AND 2 hours as a female character.
Complete all instances of Insurance Fraud.
Complete 'Murderbrawl XXXI'.
Complete 'Zombie Attack'.
Complete all City Takeover gameplay in the Downtown district.
Complete Act 2.
Complete all instances of Trafficking.
Complete 'http://deckers.die'.
Complete all instances of Heli Assault.
Complete all instances of Guardian Angel.
Complete 'STAG Party'.
Kill 1000 Gang Members.
Find 25% of all Collectibles.
Complete 'The Ho Boat'.
Explore every hood in Steelport.
Complete your first Challenge.
Complete Act 1 in one way.
Complete 'We've Only Just Begun'.
Play SR3 Co-op for 5 hours.
Hijack 50 vehicles - Dukes style.
Complete 'Party Time'.
Buy your first Upgrade from the Upgrade Store.
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).
Throw 5 mascots into the water (in a single instance of Apocalypse Genki).
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.
Destroy a mouse ATV during Sexy Kitten Yarngasm.
Cause $150,000 worth of damage in a single Sexy Kitten Yarngasm combo.
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.
Kill 7 Space Amazons with melee attacks.
Collect all 6 hidden clapboards.
Kill 35 Space Amazons with the Laser Pistol.
Destroy all enemy spacecraft during the chase scene.
Land on the Parachute Target during the rescue scene.
Kill 15 cameramen.
Shoot down a helicopter with a Saints Flow fireball.
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.
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.