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.
Play SR3 Co-op for 5 hours.
Complete all instances of Activities in Co-op.
Beat all Missions in Co-op.
Complete Act 1 in another way.
Complete Act 3 in one way.
Customize 10 vehicles.
Complete ALL Challenges.
Spend over 30 hours in Steelport.
Kill 25 Gang Members each with 'the Penetrator' AND the Fart in a Jar.
Steal and deliver all Vehicle Theft targets.
Taunt AND/OR Compliment 50 gang members.
Upgrade one Stronghold to its full glory.
Kill all of the hitman Assassination targets.
Find 100% of all Collectibles.
Kill 50 brutes.
Fully upgrade one Weapon in each slot.
Play for at least 2 hours as a male character AND 2 hours as a female character.
Complete all City Takeover gameplay in the New Colvin district.
Complete all City Takeover gameplay in the entire city of Steelport.
Complete all instances of Escort.
Destroy all Gang Operations in Steelport.
Complete all instances of Tank Mayhem.
Complete all instances of Snatch.
Complete all instances of Trafficking.
Complete all City Takeover gameplay in the Downtown district.
Complete all instances of Heli Assault.
Complete all instances of Professor Genki's Super Ethical Reality Climax.
Do your first nutshot AND testicle assault.
Complete all instances of Insurance Fraud.
Complete all City Takeover gameplay in the Carver Island district.
Complete all instances of Mayhem.
Complete all instances of Trail Blazing.
Find 25% of all Collectibles.
Complete all City Takeover gameplay in the Stanfield district.
Complete Act 3 in another way.
Complete 'Murderbrawl XXXI'.
Complete 'Zombie Attack'.
Complete Act 2.
Complete 'http://deckers.die'.
Kill 1000 Gang Members.
Complete all instances of Guardian Angel.
Hijack 50 vehicles - Dukes style.
Complete 'STAG Party'.
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'.
Buy your first Upgrade from the Upgrade Store.
Complete 'Party Time'.
Complete 'I'm Free - Free Falling'.
Create and share a character online.
Complete 'When Good Heists...'.
Throw 5 mascots into the water (in a single instance of Apocalypse Genki).
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).
Destroy 5 chase vehicles (in a single instance of Super Ethical PR Opportunity).
Cause $150,000 worth of damage in a single Sexy Kitten Yarngasm combo.
Destroy a mouse ATV during Sexy Kitten Yarngasm.
Finish both instances of Apocalypse Genki.
Roast 50 peds with the car’s flamethrower (in a single instance of Super Ethical PR Opportunity).
Collect all 6 hidden clapboards.
Kill 7 Space Amazons with melee attacks.
Kill 15 cameramen.
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 35 Space Amazons with the Laser Pistol.
Destroy all enemy spacecraft during the chase scene.
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'.
Destroy 45 Police and Swat Vehicles while protecting Jimmy's car.
Hold Your Position at Technically Legal using only melee attacks.