GRAND THEFT AUTO: SAN ANDREAS UNLOCKABLES
Unlock the Hunter
Get all the gold awards in pilot school to spawn one at Verdant Meadows Airstrip
Unlock the Hydra
Beat the mission, "Vertical Bird" and it will spawn at your airstrip
Unlock the Hydra and Rhino at CJ's house
Complete the game 100 percent to have the Hydra Jet and Rhino Tank spawn outside CJ's house on Grove Street.
Unlock the Jet Pack
Complete the airstrip asset near Las Venturas
Unlock the JetMax
Get all gold awards in boat school
Unlock the Leviathan
Complete the mission "Up, Up, and Away" and the Leviathan will spawn at your airstrip
Unlock the Marquis
Get all the bronze awards in boat school
Unlock the Monster
Collect 5 vehicles for the Import/Export dock
Unlock the Monster Car
Win it by beating 8-track
Unlock the NRG-500
Get all the gold awards at bike school