Grand Theft Auto III/Walkthrough

Story Missions
Introduction
 * Give Me Liberty

Luigi Goterelli
 * Luigi's Girls
 * Don't SPANK Ma Bitch Up
 * Drive Misty For Me
 * Pump-Action Pimp
 * The Fuzz Ball

Joey Leone
 * Mike Lips Last Lunch
 * Farewell 'Chunky' Lee Chong
 * Van Heist
 * Cipriani's Chauffer
 * Dead Skunk In The Trunk
 * The Getaway

Toni Cipriani
 * Taking Out The Laundry
 * The Pick-Up
 * Salvatore's Called A Meeting
 * Triads And Tribulations
 * Blow Fish

Salvatore Leone
 * Chaperone
 * Cutting The Grass
 * Bomb Da Base
 * Last Requests

Side Missions
Marty Chonks
 * The Crook
 * The Thieves
 * The Wife
 * Her Lover

El Burro
 * not done yet

Staunton Island
Asuka Kasen
 * Sayonara Salvatore
 * Under Surveillance
 * Paparazzi Purge
 * Payday For Ray
 * Two-Faced Tanner
 * Bait
 * Espresso-2-Go!
 * S.A.M.

Kenji Kasen
 * Kanbu Bust Out
 * Grand Theft Auto
 * Deal Steal
 * Shima
 * Smack Down

Ray Machowski
 * Silence The Sneak
 * Arms Shortage
 * Evidence Dash
 * Gone Fishing
 * Plaster Blaster
 * Marked Man

Donald Love
 * Liberator
 * Waka-Gashira Wipeout
 * A Drop In The Ocean
 * Grand Theft Aero
 * Escort Service
 * Decoy
 * Love's Disapperance

King Courtney
 * Bling-Bling Scramble
 * others

(this list is incomplete)