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 instances of Activities in Co-op.
Beat all Missions in Co-op.
Steal and deliver all Vehicle Theft targets.
Complete ALL Challenges.
Complete Act 1 in another way.
Customize 10 vehicles.
Taunt AND/OR Compliment 50 gang members.
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.
Find 100% of all Collectibles.
Complete all City Takeover gameplay in the Stanfield district.
Complete all instances of Trail Blazing.
Complete all instances of Professor Genki's Super Ethical Reality Climax.
Complete all instances of Mayhem.
Complete all City Takeover gameplay in the New Colvin district.
Complete all instances of Escort.
Complete all instances of Trafficking.
Complete all instances of Insurance Fraud.
Complete Act 3 in another way.
Complete Act 3 in one way.
Complete 'STAG Party'.
Complete 'http://deckers.die'.
Complete Act 2.
Complete 'Zombie Attack'.
Complete 'Murderbrawl XXXI'.
Complete all City Takeover gameplay in the Downtown district.
Complete all instances of Heli Assault.
Complete all instances of Snatch.
Kill all of the hitman Assassination targets.
Kill 50 brutes.
Spend over 30 hours in Steelport.
Complete 'The Ho Boat'.
Play for at least 2 hours as a male character AND 2 hours as a female character.
Fully upgrade one Weapon in each slot.
Upgrade one Stronghold to its full glory.
Create and share a character online.
Complete all instances of Guardian Angel.
Complete all instances of Tank Mayhem.
Kill 1000 Gang Members.
Play SR3 Co-op for 5 hours.
Find 25% of all Collectibles.
Complete Act 1 in one way.
Complete 'We've Only Just Begun'.
Do your first nutshot AND testicle assault.
Hijack 50 vehicles - Dukes style.
Complete 'Party Time'.
Complete your first Challenge.
Explore every hood in Steelport.
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).
Throw 5 mascots into the water (in a single instance of Apocalypse Genki).
Land on Magarac Island (in Sad Panda Skyblazing).
Destroy 5 chase vehicles (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.
Kill all of the rooftop mascots (in a single instance of Sad Panda Skyblazing).
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.
Land on the Parachute Target during the rescue scene.
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.
Shoot down a helicopter with a Saints Flow fireball.
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.
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.
Complete mission 'Weird Science'.