Everything that counts toward the in-game 100% stat in Liberty City Stories: 70 story missions, 20 rampages, 26 unique stunt jumps, 100 hidden packages and every side activity that moves the stat (asset and vehicle missions, races, Bump and Grinds, Slash TV, the Car-azy Car Giveaway…).
There is no official point table; weights follow the community checklist of 171 equal objectives (each worth about 0.585%). Hidden packages count once per 10 collected.
Version differences: on iOS/Android, Vigilante, Paramedic and Firefighter need 9 levels instead of 12, and several course target times differ. 100% can usually be reached before the final mission, The Sicilian Gambit.
Reward: infinite ammo, among other perks; on PSP, all multiplayer content is unlocked. Not required: Good Citizen, Godfather rating, max cash and stunt bonuses.