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.
Do your first nutshot AND testicle assault.
Kill 50 brutes.
Steal and deliver all Vehicle Theft targets.
Fully upgrade one Weapon in each slot.
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 instances of Professor Genki's Super Ethical Reality Climax.
Find 100% of all Collectibles.
Kill 25 Gang Members each with 'the Penetrator' AND the Fart in a Jar.
Complete all instances of Insurance Fraud.
Complete all instances of Heli Assault.
Complete all City Takeover gameplay in the New Colvin district.
Complete all instances of Trafficking.
Play for at least 2 hours as a male character AND 2 hours as a female character.
Complete all instances of Snatch.
Complete all instances of Escort.
Complete all instances of Tank Mayhem.
Complete all City Takeover gameplay in the Stanfield district.
Complete all instances of Trail Blazing.
Complete all instances of Mayhem.
Upgrade one Stronghold to its full glory.
Customize 10 vehicles.
Complete Act 3 in one way.
Complete Act 3 in another way.
Complete 'Zombie Attack'.
Complete 'Murderbrawl XXXI'.
Find 25% of all Collectibles.
Complete Act 2.
Complete 'http://deckers.die'.
Kill 1000 Gang Members.
Complete all instances of Guardian Angel.
Complete 'STAG Party'.
Complete 'The Ho Boat'.
Explore every hood in Steelport.
Complete your first Challenge.
Hijack 50 vehicles - Dukes style.
Complete Act 1 in one way.
Complete 'We've Only Just Begun'.
Create and share a character online.
Complete 'Party Time'.
Buy your first Upgrade from the Upgrade Store.
Complete 'I'm Free - Free Falling'.
Complete 'When Good Heists...'.
Complete ALL Challenges.
Taunt AND/OR Compliment 50 gang members.
Spend over 30 hours in Steelport.
Play SR3 Co-op for 5 hours.
Complete all instances of Activities in Co-op.
Beat all Missions in Co-op.
Destroy 5 chase vehicles (in a single instance of Super Ethical PR Opportunity).
Roast 50 peds with the car’s flamethrower (in a single instance of Super Ethical PR Opportunity).
Throw 5 mascots into the water (in a single instance of Apocalypse Genki).
Cause $150,000 worth of damage in a single Sexy Kitten Yarngasm combo.
Complete all activity instances in Genki Bowl VII.
Fly through all of the rings (in a single instance of Sad Panda Skyblazing).
Kill all of the rooftop mascots (in a single instance of Sad Panda Skyblazing).
Land on Magarac Island (in Sad Panda Skyblazing).
Finish both instances of Apocalypse Genki.
Destroy a mouse ATV during Sexy Kitten Yarngasm.
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 7 Space Amazons with melee attacks.
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.
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'.
Hold Your Position at Technically Legal using only melee attacks.
Destroy 45 Police and Swat Vehicles while protecting Jimmy's car.