Mission List:

Los Santos Missions:
Protagonist Carl Johnson returns to his hometown of Los Santos and needs to re-establish himself in the neighborhood. Missions in this city involve Carl's rise to power in the Grove Street Families, and the challenges with his family. Many of these missions have Carl as the driver plus additional help as required.
There are 28 missions in the main thread in Los Santos.

Introduction:
In The Beginning - is the opening sequence, cutscene and mission of GTA San Andreas.
Carl Johnson:
Big Smoke - is the cutscene where CJ meets Big Smoke.
Sweet & Kendl - is a mission that expands BMX riding and exploring the city of Los Santos.
Ryder:
Ryder - is a mission that introduces the Barbers, the Restaurants, and driving.
Sweet:
Tagging Up Turf - Tag over some of the rival gang's tags.
Cleaning The Hood - Take out drug dealers on your territory.
Drive-Thru - Stop the Ballas from getting to Grove Street
Nines and AK's - Visit Emmet for some target practice.
Drive-By - Drive By on rival gang members.
Sweet's Girl - Save Sweet and his girl from an onsluaght of gang members.
Cesar Vialpando - Follow Kendl and win a lowrider competition.
Big Smoke:
OG Loc - Visit an old friend from jail.
Running Dog - Chase down a rival gang member.
Wrong Side Of The Tracks - Disrupt a gang meeting.
Just Business - Help Big Smoke against the Russian Mafia.
Ryder:
Home Invasion - Rob a veteran for weapons.
Catalyst - Steal weapons off a train.
Robbing Uncle Sam - Raid a National Guard base.
Cesar Vialpando:
High Stakes, Low Rider - Race Cesar and his other racers.
OG Loc:
Life's A Beach - Steal a sound system for OG Loc.
Madd Dogg's Rhymes - Steal Madd Dogg's rhyme book.
Management Issues - Kill Alan Crawford, Madd Dogg's manager.
House Party - Party with the OG's.
Frank Tenpenny:
Burning Desire - Burn down a gang house.
Gray Imports - Kill a Russian weapon dealer.
Sweet
Doberman - Take Over Glen Park.
Los Sepulcros - Kill rival gang member Kane.
Reuniting The Families - Take Sweet to reunite the 'families' gang.
The Green Sabre - Save Sweet from dying.

Countryside Missions:
CJ has stumbled onto something that is much bigger than himself. It appears that Big Smoke is totally loyal to Officer Tenpenny and he does exactly what he is told. Tenpenny warns CJ to stay away from Big Smoke or Sweet will suffer. Tenpenny has a few loose ends that need to be taken care of at the same time CJ is trying to re-establish himself.
There are 14 missions in the Countryside.

Frank Tenpenny:
Badlands - Take out an ex-policeman for Tenpenny.
Unknown:
First Date - Meet Cesar's cousin. NOTE: Choose a Robbery mission listed below after the cutscene.
The Truth:
Body Harvest - Steal a Combine Harvester.
Cesar Vialpando:
King In Exile
Catalina:
First Base - NOTE: Choose a Robbery mission listed below after the cutscene.
Gone Courting - NOTE: Choose a Robbery mission listed below after the cutscene.
Made In Heaven - NOTE: Choose a Robbery mission listed below after the cutscene.
Robbery Choices:
Tanker Commander - Hijack a tanker truck.
Local Liquor Store - Rob a liquor store in Blueberry.
Against All Odds - Rob the Off-Track Betting shop in Montgomery.
Small Town Bank - Rob a bank in Palomino Creek.
Cesar Vialpando
Wu Zi Mu - Race against Woozie.
Farewell, My Love... - Race against Catalina and her new boyfriend, Claude.
The Truth:
Are You Going To San Fierro? - Burn down The Truth's drug plantation and drive to San Fierro.

San Fierro Missions:
Things are starting to look up a little for CJ. He now owns a dilapidated garage and a close circle of allies to assist him in his rise to power. San Fierro offers a variety of missions to help CJ become even stronger in his quest to return to Los Santos.
There are 27 story missions in San Fierro.

Carl Johnson:
Wear Flowers In Your Hair
555 WE TIP - Frame the DA by posing as a Valet and planting drugs in his car.
Deconstruction - Get your revenge on some construction workers for calling Kendl a hooker.
Zero:
Air Raid - Defend Zero's transmitters.
Supply Lines... - Destroy some RC vehicle delivery vans.
New Model Army - Help Zero in a RC vehicle war.
The Triads:
Photo Opportunity - Catch some gang members red-handed.
Jizzy - Meet Jizzy
Jizzy
Jizzy - Help Jizzy out with his pimp duties.
T-Bone Mendez - Retrieve some stolen cash.
Mike Toreno - Find Mike Toreno.
Wu Zi Mu:
Mountain Cloud Boys - Escort Woozie to safety.
Ran Fa Li - Steal a car from the airport and take it to a lockup.
Lure - Prevent an assassination with a decoy.
Amphibious Assault - Bug a Da Nang meeting on a boat.
The Da Nang Thang - Release some refugees from a boat and kill Snakehead.
The Triads:
Outrider - Transport drugs past some roadblocks.
Frank Tenpenny:
Snail Trail - Snipe a journalist and his contact.
The Triads:
Ice Cold Killa - Break into the Pleasure Dome and kill Jizzy.
Pier 69 - Raid a deal between the Ballas and the Loco Syndicate to kill Ryder and T-Bone Mendez.
Toreno's Last Flight - Shoot down Toreno's helicopter.
Yay Ka-Boom-Boom - Blow up a drug factory.
School:
Back to School - Learn some advanced driving techniques.
Cesar Vialpando:
Zeroing In - Steal a car from a driving woman.
Test Drive - Steal and test two racing cars with Cesar.
Customs Fast Track - Steal a car from a container in the docks.
Puncture Wounds - Steal a car using stingers.

Desert Missions:
These series of missions have more of a fun and adventuresome ring to them. CJ will be doing some rather strange things on some missions. In addition, you get to learn how to fly which will come in very handy later on.
There are 9 story missions in the Desert.

Unknown:
Monster - Complete a time trial in a Monster Truck.
Highjack - Hijack a truck and drive it back to Doherty.
Mike Toreno:
Interdiction - Escort and protect Toreno's helicopter.
Verdant Meadows - Buy the airstrip in Bone County.
School:
Learning to Fly- Complete flying school
Airstrip:
N.O.E. - Drop off some things for Mike.
Stowaway - Destroy a government plane.
Black Project - Enter Area 69, and steal the Black Project.
Green Goo - Fly over a train, and take what ever the military least wants you to take.

Las Venturas Missions:
CJ has really made a name for himself. Not only has he regained a lot of his power back, he is also the proud owner of one business and a partner in a major casino. This series of missions basically ensures that the competition is either eliminated or it is severely subdued.
There are 19 story missions in Las Venturas.

The Four Dragons Casino:
Fender Ketchup - Scare a guy by driving around with him on your windscreen.
Explosive Situation - Steal armed dynamite from the quarry.
You've Had Your Chips - Disable the Sindacco's factory from making counterfeit casino chips.
Don Peyote - Rescue Maccer and Kent Paul from the desert.
Robbery:
Architectural Espionage - Steal the plans to Caligula's Casino.
Key To Her Heart - Gain the affections of Millie to gain a keycard.
Dam And Blast - Prepare the dam for the power to the casino to be disabled.
Cop Wheels - Steal some HPV 1000 police bikes.
Up, Up and Away! - Steal an armored truck using a Leviathan.
Caligula's Casino
Intensive Care - Rescue Johnny Sindacco from the Forellis in an ambulance.
The Meat Business - Escape from the Sindaccos in the meat factory.
Frank Tenpenny:
Misappropriation - Kill some federal agents in the Desert, and steal a dossier.
The Four Dragons Casino:
Fish In A Barrel - Take co-ownership of the Four Dragons Casino.
Madd Dogg:
Madd Dogg - Rescue Madd Dogg from a suicide attempt.
Caligula's Casino:
Freefall - Intercept, board, empty and land a plane full of Forellis
Frank Tenpenny:
High Noon - Kill Officer Pulaski.
Caligula's Casino:
Saint Mark's Bistro - Fly to Liberty City and take out Marco Forelli.
Robbery:
Breaking The Bank At Caligula's - Rob Caligula's Casino.
The Four Dragons Casino:
A Home In The Hills - Retake Madd Dogg's Crib.

Final Missions:
CJ has it all now. Money, power, and fame. He isn't happy, though, as he later finds the business life isn't for him. He wants to go back to the old neighborhood to take it once and for all. Of course, Madd Dogg's release only hastens his desire.
There are 8 story missions in Los Santos after the return.

Carl Johnson:
Vertical Bird - Steal a Hydra from an aircraft carrier for Toreno.
Home Coming - Pick Sweet up from the police station, take out some dealers and reclaim Grove Street.
Cut Throat Business - Chase OG Loc to reclaim Madd Dogg's music.
Sweet:
Beat Down On B Dup - Start a gang war to claim Glen Park.
Grove 4 Life - Claim Idlewood and any other neighborhood.
Carl Johnson:
Riot - Drive to Grove Street amid total carnage.
Sweet:
Los Desperados - Retake Cesar's territory from the Vagos.
End of the Line - Take out Big Smoke's crack palace and chase down Tenpenny.

Cheats:

WARNING!
You should be careful on using cheat codes too frequently until you complete the mission where you save Madd Dogg from jumping off the casino rooftop. The game will prevent you from completing this mission if codes have been used excessively; this number appears to be cheats being used 500 or more times. When this number has been exceeded, Madd Dogg will jump off the roof in a few seconds, making it impossible to save him. Note: If you encounter this problem, enable the "Slow motion" or "Adrenaline effects" codes to get there faster. You still must be quick in order to save Madd Dogg.
Infinite health:
While playing the game, press . If you entered the code correctly, a message will appear. Note: Falls, explosions, drowning, and vehicle rundowns are still harmful.