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 ALL Challenges.
Beat all Missions in Co-op.
Complete all instances of Activities in Co-op.
Steal and deliver all Vehicle Theft targets.
Kill all of the hitman Assassination targets.
Find 100% of all Collectibles.
Kill 25 Gang Members each with 'the Penetrator' AND the Fart in a Jar.
Complete all City Takeover gameplay in the Carver Island 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 Stanfield district.
Complete all City Takeover gameplay in the New Colvin district.
Complete all City Takeover gameplay in the Downtown district.
Complete all instances of Escort.
Complete all instances of Trail Blazing.
Complete all instances of Insurance Fraud.
Taunt AND/OR Compliment 50 gang members.
Complete all instances of Trafficking.
Complete all instances of Professor Genki's Super Ethical Reality Climax.
Complete all instances of Snatch.
Create and share a character online.
Complete all instances of Mayhem.
Complete all instances of Heli Assault.
Spend over 30 hours in Steelport.
Fully upgrade one Weapon in each slot.
Kill 50 brutes.
Customize 10 vehicles.
Play SR3 Co-op for 5 hours.
Upgrade one Stronghold to its full glory.
Complete Act 1 in one way.
Hijack 50 vehicles - Dukes style.
Complete all instances of Tank Mayhem.
Do your first nutshot AND testicle assault.
Complete Act 3 in one way.
Find 25% of all Collectibles.
Complete Act 3 in another way.
Complete 'Murderbrawl XXXI'.
Kill 1000 Gang Members.
Complete 'Zombie Attack'.
Complete Act 2.
Complete 'http://deckers.die'.
Complete all instances of Guardian Angel.
Play for at least 2 hours as a male character AND 2 hours as a female character.
Complete 'STAG Party'.
Complete 'The Ho Boat'.
Complete your first Challenge.
Explore every hood in Steelport.
Complete Act 1 in another 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...'.
Roast 50 peds with the car’s flamethrower (in a single instance of Super Ethical PR Opportunity).
Kill all of the rooftop mascots (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.
Finish both instances of Apocalypse Genki.
Throw 5 mascots into the water (in a single instance of Apocalypse Genki).
Fly through all of the rings (in a single instance of Sad Panda Skyblazing).
Destroy a mouse ATV during Sexy Kitten Yarngasm.
Destroy 5 chase vehicles (in a single instance of Super Ethical PR Opportunity).
Collect all 6 hidden clapboards.
Kill 7 Space Amazons with melee attacks.
Complete all missions for Gangstas in Space.
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.
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 mission 'Weird Science'.
Shoot down a helicopter with a Saints Flow fireball.
Complete all missions for "The Trouble With Clones".
Complete mission 'Tour de Farce'.
Destroy 5 Steelport Guard vehicles during mission 'Tour de Farce'.
Spray 25 rabid fans with the Swarmitron.
Destroy 45 Police and Swat Vehicles while protecting Jimmy's car.