Grand Theft Auto III/Items

Weapons

Fists
Pistol (12 rounds / magazine)
Uzi (25 rounds / magazine)
Shotgun
AK-47 (30 rounds / magazine)
M-16 (60 rounds / magazine)
- requires aiming in Classic mode
Sniper rifle
- requires aiming; can zoom in or out
RPG
- requires Aiming
Flamethrower
Molotov cocktail
- hold down the shoot button for longer distance
Grenade
- hold down the shoot button for longer distance

Health

The red-orange Heart symbol and number are your hit points (maximum 125).

Armor

The green Shield symbol and number is your armor points; these must be found in the game.

Drugs

The red/white Pill symbol grants a limited time period of slowed gameplay and inordinate punching power. Negated immediately upon entering vehicle or death.

Wanted stars

There are six blackened sheriff-star symbols under the HP readout. This Wanted meterwill grow in yellow stars with every noticeable crime you commit, such as hitting a police car, stealing a car or hitting any person in front of an officer, firing a gun, etc. Upon starting the game, you can receive a maximum of 4 stars; upon unlocking the 2nd island, 5 stars; unlocking all 3 islands, 6 stars. You may use a Pay 'n' Spray to rid yourself of all stars (except certain scripted missions).

Heart, Shield, and Star symbols are strewn throughout the City, each refilling your HP, AP, or lowering your wanted level by one star.

When you finish side missions, many weapons and bonuses will be delivered to your hideout, one in each island. They will be exhausted until you hit a camera angle that resets these perks: in Portland, run into the end of your garage or save room, then come out to reset your bonuses; in Staunton, run into your large garage; in Shoreside, run into your save room.

Side-missions

Ambulance

Levels 1-12 will require you to pick-up and deliver L number of casualties to the hospital; Level 12 requires 4 minimum trips (Ambulance seats 3 + driver)
Bonuses: Health, Drugs, and if Level 12 is successfully completed, Claude Speed will sprint indefinitely without rest

Vigilante

20 kills per island gives you 2 star-reductions at your hideout
Can be started in Police cruiser, SWAT Enforcer van, FBI sedan, or Rhino tank (maybe OL Barracks truck)
(PC) Glitch: going to menu (Esc) next to fugitive will force them to exit their vehicle

Firefighter

20 fires extinguished per island, 60 total, unlocks the Flamethrower at your hideout
(PC) Glitch: going to the menu will extinguish any fire
These missions are the only way to retrieve some rare vehicles for the Import-Export Garage before unlocking the 2nd island