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 one way.
Taunt AND/OR Compliment 50 gang members.
Complete Act 3 in one way.
Kill all of the hitman Assassination targets.
Play SR3 Co-op for 5 hours.
Spend over 30 hours in Steelport.
Play for at least 2 hours as a male character AND 2 hours as a female character.
Customize 10 vehicles.
Complete all City Takeover gameplay in the Stanfield 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.
Kill 50 brutes.
Complete all instances of Snatch.
Complete all instances of Mayhem.
Complete all instances of Heli Assault.
Complete all instances of Insurance Fraud.
Find 100% of all Collectibles.
Complete all instances of Trail Blazing.
Complete all City Takeover gameplay in the Downtown district.
Complete all instances of Escort.
Complete all instances of Professor Genki's Super Ethical Reality Climax.
Kill 25 Gang Members each with 'the Penetrator' AND the Fart in a Jar.
Complete all City Takeover gameplay in the New Colvin district.
Upgrade one Stronghold to its full glory.
Complete all instances of Trafficking.
Fully upgrade one Weapon in each slot.
Complete all instances of Tank Mayhem.
Complete Act 3 in another way.
Find 25% of all Collectibles.
Complete 'Zombie Attack'.
Complete 'Murderbrawl XXXI'.
Complete Act 2.
Complete 'http://deckers.die'.
Kill 1000 Gang Members.
Complete 'STAG Party'.
Complete 'The Ho Boat'.
Create and share a character online.
Complete all instances of Guardian Angel.
Hijack 50 vehicles - Dukes style.
Complete Act 1 in another way.
Complete 'We've Only Just Begun'.
Complete 'Party Time'.
Complete your first Challenge.
Explore every hood in Steelport.
Do your first nutshot AND testicle assault.
Buy your first Upgrade from the Upgrade Store.
Complete 'I'm Free - Free Falling'.
Complete 'When Good Heists...'.
Steal and deliver all Vehicle Theft targets.
Complete ALL Challenges.
Complete all instances of Activities in Co-op.
Beat all Missions in Co-op.
Kill all of the rooftop mascots (in a single instance of Sad Panda Skyblazing).
Throw 5 mascots into the water (in a single instance of Apocalypse Genki).
Roast 50 peds with the car’s flamethrower (in a single instance of Super Ethical PR Opportunity).
Complete all activity instances in Genki Bowl VII.
Land on Magarac Island (in Sad Panda Skyblazing).
Fly through all of the rings (in a single instance of Sad Panda Skyblazing).
Cause $150,000 worth of damage in a single Sexy Kitten Yarngasm combo.
Finish both instances of Apocalypse Genki.
Destroy 5 chase vehicles (in a single instance of Super Ethical PR Opportunity).
Destroy a mouse ATV during Sexy Kitten Yarngasm.
Destroy all enemy spacecraft during the chase 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.
Kill 7 Space Amazons with melee attacks.
Collect all 6 hidden clapboards.
Kill 35 Space Amazons with the Laser Pistol.
Kill 15 cameramen.
Land on the Parachute Target during the rescue scene.
Prevent Johnny Tag from taking damage on the Magarac Bridge.
Kill a Brute using only melee damage while under the influence of Saints Flow.
Hold Your Position at Technically Legal using only melee attacks.
Complete all missions for "The Trouble With Clones".
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.