Misi 2 GTA: San Andreas

Collectibles
Unlockable How to Unlock
Increase Lung capacity and Sex Appeal Find all 50 Oysters
Increase Luck Find all 50 Horseshoes in Las Venturas
SMG, Combat shotgun, M4, and Satchel Charges delivered to Four Dragons Casino Find all 50 horseshoes

Unlockable Outfits
Unlockable How to Unlock
Pimp Outfit Get your relationship to 100 percent with Denise Robinson
Medic Outfit Get your relationship to 100 percent with Katie Zhan
Racing Outfit Get your relationship to 100 percent with Michelle
Police Outfit Get your relationship to 100 percent with Barbara
Overalls Outfit Get your relationship to 100 percent with Helena
Gimp Suit Complete the mission "The Key to her Heart"
Croupier Outfit Complete the mission "Breaking the bank at Caliqula's"
Valet Outfit Complete the mission "555 We Tip"

Dating Perks
Unlockable How to Unlock
Keep weapons after being wasted Date Katie
Keep weapons after being busted Date Barbara
Free car respray at Michelle's house Date Michelle
Molotov Cocktails, Pistol, Flame Thrower and Chainsaw Date Helena and the weapons will spawn in the shed

100% Game Completion Bonuses
Unlockable How to Unlock
Stats and cash boost. Rhino and Hydra delivered to CJ's house in Grove Street 100% Game Completion
Infinte ammo (Total ammo will raise if you shoot your selected weapon, but will reset back to its original number) 100% Game Completion

Dual wield weapons
Unlockable How to Unlock
Dual Pistols Reach hitman level with pistols
Dual Sawed-Off shotguns Reach hitman level with Sawed-Off shotguns
Dual Machine Pistols Reach hitman level with Machine pistols
Dual Tec 9s Reach hitman level with Tec 9s

Unlockable Assets
Complete the requirments to get money made at that location.

Unlockable How to Unlock
Valet Parking Asset (San Fierro) Complete Level 5 of the Valet Parking
Wang Cars Asset (San Fierro) Complete the missions to get the cars (Located at your main Garage)
Zeros RC Shop Asset Complete all Zero's missions
Roboi's Food Mart Asset Complete the 4 levels of deliveries in Los Santos.
Burger Shot Asset Complete the 4 levels of deliveries in Redsands East, Las Venturas.
Airstrip Asset Complete all of Toreno's Missions at the Abandoned Airstrip
Hippy Shopper as an asset Beat the 4 level couriers mission in San Fierro
The Johnson House Take over your first territories at the end of Los Santos
Quarry Asset Complete all Quarry missions
Truck Stop Asset Complete all trucking missions

Cars obtained through dating girls
Date any of these girls and get your relationship to 50% and you will get the keys to their car.

Unlockable How to Unlock
Green hustler Date Denise
Romero Date Katie
Ranger Date Barbara
Monster Truck Date Michelle
Club Date Millie
Bandito Date Helena

50K and Free Train Rides
Complete 10 (or level 2) of the freight missions to unlock a free train ride and 50K.

Unlockable How to Unlock
50K and train rides complete freight Missions

Infinite sprint
Complete "Burglary" by having C.J. steal $10,000 worth of stuff.

Unlockable How to Unlock
Infinite Sprint Complete "Burglary"
GTA: San Andreas Easter Eggs
Idle Screensaver
Do not move CJ for 2-3 minutes. The display will be removed and the camera will start to follow and zoom into any activity going on (ie. Pursuits, fights, people talking).

Change the size of the moon
Shoot the moon with the sniper rifle and it will grow until it reaches a certain size when he will shrink when you shoot it again.

Civilian Lemmings
Go to the gym in Las Venturas, and through the bomb garage next to it. Stand in that alley and look at the building across the street to your right -- and you'll see people jumping and walking off the roof. It will only happen if you stand in that alley and watch it from there. It's pretty much a Lemmings Easter Egg since Rockstar North made Lemmings (the company was known as DMA then)