Full list of all 60 Saints Row 2 achievements worth 1,250 gamerscore. It takes around 80-100 hours to unlock all of the achievements in the base game.
The base game contains 50 achievements worth 1,000 Gamerscore, and there are 2 DLC packs containing 10 achievements worth 250 Gamerscore.
Completed all levels of Mayhem
Earned 15 Badges in multiplayer
Created and won an Xbox LIVE Party Game
Won all seven Ranked Strong Arm Activities, and won on all seven Strong Arm maps
Won 10 Xbox LIVE Strong Arm matches
Earned 7 Badges in multiplayer
Completed the Strong Arm tutorial
Completed all campaign missions in co-op
Completed all Samedi missions in co-op
Completed all Ronin missions in co-op
Completed all Brotherhood missions in co-op
Exacted revenge on Julius
Completed all levels of Heli Assault
Completed all levels of Escort
Completed all levels of Trail Blazing
Completed all levels of Snatch
Completed all levels of Drug Trafficking
Defeated your partner in a co-op diversion
Played Saints Row 2 in single player or co-op for a combined 50 hours
Completed all levels of Septic Avenger
Completed all levels of Crowd Control
Threw someone a long, long way
Completed all levels of Fight Club
Defeated the Ultor Corporation epilogue
Defeated the Brotherhood
Hit 100 lifetime nut shots
Defeated the Sons of Samedi
Completed all levels of Insurance Fraud
Completed all levels of FUZZ
Grabbed 50 human shields
Defeated the Ronin
Sung along to the radio
Completed all levels of Demolition Derby
Got 3 gold stars in Vehicle Surfing
Completed the Saints Revival prologue
Completed the Zombie Uprising video game
Complete all levels of all activities
Complete all levels of Tow Truck, Fire Truck, Ambulance, and Taxi diversions
Find all stunt jumps in Stilwater
Find all flying stunt locations in Stilwater
Find all CDs in Stilwater
Find and spray all 50 tags in Stilwater
Deliver all the cars to the chop shops
Kill all Hitman targets
Complete all races in Stilwater
Master mugging
Casino rat
Be a hater
Complete all levels of all activities in co-op
Earn 30 Multiplayer Badges
Complete the Ultor Exposed misison arc
Play the Co-op Mission game once
Win the Co-op competitive mission game 5 times
Call Tera as a homie
Host or play in a party match on Xbox LIVE
Complete the Corporate Warfare mission arc
Play the Stuntmen Co-op game once
Win 20 rounds in the Stuntmen Co-op game
Your team needs to hold all tag spots at one time in a Strong Arm match on Xbox LIVE
Won 10 Gangster Brawls or Team Gangster Brawls on Xbox LIVE