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.
Kill 25 Gang Members each with 'the Penetrator' AND the Fart in a Jar.
Complete Act 3 in one way.
Kill all of the hitman Assassination targets.
Fully upgrade one Weapon in each slot.
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.
Find 100% of all Collectibles.
Complete all City Takeover gameplay in the New Colvin district.
Complete all instances of Trafficking.
Taunt AND/OR Compliment 50 gang members.
Spend over 30 hours in Steelport.
Complete all City Takeover gameplay in the Carver Island district.
Complete Act 3 in another way.
Complete all instances of Snatch.
Complete all instances of Escort.
Complete all City Takeover gameplay in the Stanfield district.
Complete all instances of Trail Blazing.
Complete all instances of Mayhem.
Complete all instances of Professor Genki's Super Ethical Reality Climax.
Complete all instances of Insurance Fraud.
Complete all instances of Heli Assault.
Kill 50 brutes.
Complete 'Murderbrawl XXXI'.
Complete 'Zombie Attack'.
Complete Act 2.
Find 25% of all Collectibles.
Complete 'STAG Party'.
Upgrade one Stronghold to its full glory.
Complete 'http://deckers.die'.
Do your first nutshot AND testicle assault.
Customize 10 vehicles.
Complete 'The Ho Boat'.
Explore every hood in Steelport.
Kill 1000 Gang Members.
Complete all instances of Tank Mayhem.
Complete all instances of Guardian Angel.
Hijack 50 vehicles - Dukes style.
Complete Act 1 in one way.
Complete your first Challenge.
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...'.
Complete Act 1 in another way.
Steal and deliver all Vehicle Theft targets.
Complete ALL Challenges.
Play for at least 2 hours as a male character AND 2 hours as a female character.
Create and share a character online.
Play SR3 Co-op for 5 hours.
Complete all instances of Activities in Co-op.
Beat all Missions in Co-op.
Roast 50 peds with the car’s flamethrower (in a single instance of Super Ethical PR Opportunity).
Destroy 5 chase vehicles (in a single instance of Super Ethical PR Opportunity).
Land on Magarac Island (in Sad Panda Skyblazing).
Kill all of the rooftop mascots (in a single instance of Sad Panda Skyblazing).
Fly through all of the rings (in a single instance of Sad Panda Skyblazing).
Throw 5 mascots into the water (in a single instance of Apocalypse Genki).
Finish both instances of Apocalypse Genki.
Destroy a mouse ATV during Sexy Kitten Yarngasm.
Cause $150,000 worth of damage in a single Sexy Kitten Yarngasm combo.
Complete all activity instances in Genki Bowl VII.
Kill Space Brutina.
Kill 7 Space Amazons with melee attacks.
Collect all 6 hidden clapboards.
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.
Kill 15 cameramen.
Destroy 10 enemy spacecraft with the Aegean while filming.
Perform all vehicle stunts with the Aegean.
Complete all missions for Gangstas in Space.
Destroy 45 Police and Swat Vehicles while protecting Jimmy's car.
Hold Your Position at Technically Legal using only melee attacks.
Complete mission 'Weird Science'.
Spray 25 rabid fans with the Swarmitron.
Destroy 5 Steelport Guard vehicles during mission 'Tour de Farce'.
Complete mission 'Tour de Farce'.
Shoot down a helicopter with a Saints Flow fireball.
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 all missions for "The Trouble With Clones".