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 3 in one way.
Spend over 30 hours in Steelport.
Complete all City Takeover gameplay in the Downtown district.
Complete all City Takeover gameplay in the entire city of Steelport.
Complete all instances of Heli Assault.
Complete all City Takeover gameplay in the New Colvin district.
Destroy all Gang Operations in Steelport.
Complete all instances of Snatch.
Find 100% of all Collectibles.
Taunt AND/OR Compliment 50 gang members.
Complete all instances of Trafficking.
Complete all instances of Escort.
Play for at least 2 hours as a male character AND 2 hours as a female character.
Complete all City Takeover gameplay in the Carver Island district.
Complete all instances of Mayhem.
Complete all instances of Trail Blazing.
Complete all City Takeover gameplay in the Stanfield district.
Complete all instances of Insurance Fraud.
Create and share a character online.
Kill all of the hitman Assassination targets.
Complete Act 3 in another way.
Complete 'Zombie Attack'.
Complete 'Murderbrawl XXXI'.
Complete Act 2.
Complete 'STAG Party'.
Complete 'http://deckers.die'.
Do your first nutshot AND testicle assault.
Complete 'The Ho Boat'.
Kill 50 brutes.
Upgrade one Stronghold to its full glory.
Complete all instances of Professor Genki's Super Ethical Reality Climax.
Complete all instances of Guardian Angel.
Explore every hood in Steelport.
Hijack 50 vehicles - Dukes style.
Complete all instances of Tank Mayhem.
Find 25% of all Collectibles.
Kill 1000 Gang Members.
Complete your first Challenge.
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...'.
Complete Act 1 in another way.
Steal and deliver all Vehicle Theft targets.
Complete ALL Challenges.
Kill 25 Gang Members each with 'the Penetrator' AND the Fart in a Jar.
Customize 10 vehicles.
Fully upgrade one Weapon in each slot.
Play SR3 Co-op for 5 hours.
Complete all instances of Activities in Co-op.
Beat all Missions in Co-op.
Complete all activity instances in Genki Bowl VII.
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).
Land on Magarac Island (in Sad Panda Skyblazing).
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).
Destroy a mouse ATV during Sexy Kitten Yarngasm.
Cause $150,000 worth of damage in a single Sexy Kitten Yarngasm combo.
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.
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.
Kill 15 cameramen.
Land on the Parachute Target during the rescue scene.
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".