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.
Complete Act 1 in another way.
Complete ALL Challenges.
Steal and deliver all Vehicle Theft targets.
Kill all of the hitman Assassination targets.
Find 100% of all Collectibles.
Find 25% of all Collectibles.
Complete all City Takeover gameplay in the New Colvin 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 City Takeover gameplay in the Stanfield district.
Complete all instances of Trail Blazing.
Complete all instances of Activities in Co-op.
Complete all instances of Trafficking.
Complete all instances of Tank Mayhem.
Complete all instances of Escort.
Complete all instances of Professor Genki's Super Ethical Reality Climax.
Spend over 30 hours in Steelport.
Complete all instances of Heli Assault.
Complete all instances of Mayhem.
Complete all instances of Insurance Fraud.
Complete all instances of Snatch.
Fully upgrade one Weapon in each slot.
Taunt AND/OR Compliment 50 gang members.
Customize 10 vehicles.
Kill 50 brutes.
Kill 1000 Gang Members.
Create and share a character online.
Do your first nutshot AND testicle assault.
Kill 25 Gang Members each with 'the Penetrator' AND the Fart in a Jar.
Upgrade one Stronghold to its full glory.
Play for at least 2 hours as a male character AND 2 hours as a female character.
Complete Act 3 in another way.
Beat all Missions in Co-op.
Complete 'Murderbrawl XXXI'.
Complete 'Zombie Attack'.
Complete Act 2.
Complete 'http://deckers.die'.
Complete all instances of Guardian Angel.
Complete 'STAG Party'.
Complete 'The Ho Boat'.
Complete your first Challenge.
Explore every hood in Steelport.
Play SR3 Co-op for 5 hours.
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).
Roast 50 peds with the car’s flamethrower (in a single instance of Super Ethical PR Opportunity).
Fly through all of the rings (in a single instance of Sad Panda Skyblazing).
Complete all activity instances in Genki Bowl VII.
Land on Magarac Island (in Sad Panda Skyblazing).
Cause $150,000 worth of damage in a single Sexy Kitten Yarngasm combo.
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.
Throw 5 mascots into the water (in a single instance of Apocalypse Genki).
Complete all missions for Gangstas in Space.
Collect all 6 hidden clapboards.
Kill 7 Space Amazons with melee attacks.
Kill 15 cameramen.
Land on the Parachute Target during the rescue scene.
Perform all vehicle stunts with the Aegean.
Destroy 10 enemy spacecraft with the Aegean while filming.
Kill 35 Space Amazons with the Laser Pistol.
Kill Space Brutina.
Destroy all enemy spacecraft during the chase 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.