Unlock weapon and equipment upgrades to use during the Single-player game by collecting the corresponing amount of Stars.

Unlock Pistol (23-Round Clip):
Collect 6 Stars

Unlock Sub-Machine Gun (45-Round Clip):
Collect 13 Stars

Unlock Rocket Launcher (Increased Ammo 8):
Collect 19 Stars

Unlock Pistol (Increased Ammo 45):
Collect 25 Stars

Unlock Assault Rifle (45-Round Clip):
Collect 32 Stars

Unlock Machine Gun (150-Round Clip):
Collect 38 Stars

Unlock Sniper Rifle (9-Round Clip):
Collect 44 Stars

Unlock Shotgun (12-Round Clip):
Collect 51 Stars

Unlock Machine Gun (Increased Ammo 1500-3000):
Collect 57 Stars

Unlock Gernade Launcher (Increased Ammo 5):
Collect 63 Stars

Unlock Sub-Machine Gun (Increased Ammo 225):
Collect 70 Stars

Unlock Rocket Launcher (Increased Zoom):
Collect 76 Stars

Unlock Assault Rifle (Increased Ammo 225):
Collect 82 Stars

Unlock Blowtorch (Increased Ammo 1,500):
Collect 89 Stars

Unlock Sniper Rifle (Increased Ammo 15):
Collect 95 Stars

Unlock C4 Explosive (Increased Ammo 6):
Collect 101 Stars

Unlock Gernade Launcher (Increased Ammo 90):
Collect 108 Stars

Unlock 23mm Cannon (Increased Ammo 3,000):
Collect 133 Stars

Unlock 25mm Cannon (Increased Ammo 3,000):
Collect 133 Stars

Unlock 30mm Cannon (Increased Ammo 750):
Collect 133 Stars

Unlock 40mm Cannon (Increased Ammo 3,000):
Collect 133 Stars

Unlock 90mm Cannon (Increased Ammo 150):
COllect 133 Stars

Unlock 105mm Cannon (Increased Ammo 150):
Collect 133 Stars

Unlock 120mm Cannon (Increased Ammo 150):
Collect 133 Stars

Unlock 125mm Cannon (Increased Ammo 150):
Collect 133 Stars

Unlock 70mm Rocket (Increased Ammo 150):
Collect 171 Stars

Unlock Antitank Missle (Increased Ammo 75):
Collect 171 Stars

Unlock Shotgun (Increased Ammo 48):
Collect 114 Stars

Unlock Forward Observer (Increased Ammo 6):
Collect 120 Stars

Unlock Machine Gun (Increased Ammo 300):
Collect 139 Stars

Unlock Sub-Machine Gun (Increased Zoom):
Collect 126 Stars

Unlock Smoke Gernade (Increased Ammo 5):
Collect 145 Stars

Unlock Assault Rifle (Increased Zoon):
Collect 152 Stars

Unlock Auto-Injector (Increased Ammo 5):
Collect 158 Stars

Unlock Sniper Rifle (Increased Zoom):
Collect 164 Stars

Unlock Mine (Increased Ammo 5):
Collect 177 Stars

Unlock Forward Observer (Extended Target Length):
Collect 183 Stars

Unlock Stun Gernade (Increased Ammo 5):
Collect 190 Stars

Unlock Frag Gernade (Increased Ammo 5):
Collect 196 Stars

Unlock Laster Target Designator (Increased Ammo 2):
Collect 202 Stars

Unlock Mortar Strike (Increased Ammo 2):
Collect 209 Stars

Unlock Locking Missle (Increased Ammo 6):
Collect 215 Stars

Unlock Sniper Rifle (Armor-Piercing Bullets):
Collect 221 Stars

Unlock Rocket Launcher (Homing Missle):
Collect 228 Stars

Unlock Laser Target Designator (Increased Zoom):
Collect 234 Stars

Unlock Sub-Machine Gun (Armor-Piercing Bullets):
Collect 240 Stars

Unlock Laser Target Designator (Bunker Buster Splash Damage):
Collect 247 Stars

Unlock Assault Rifle (Armor-Peiercing Bullets):
Collect 253 Stars

Unlock Mortar Strike (Carpet Bomb):
Collect 259 Stars

Unlock Machine Gun (Armor-Piercing Bullets):
Collect 266 Stars

Unlock the following by meeting the corresponding requirements

Unlock Chief Warrant Officer:
Win 5 Medals - 3700 Points - 50 PPH

Unlock Captain:
Win 8 Medals - 8430 Points - 65 PPH

Unlock Colonel Rank:
Win 11 Medals, 16070 Points, 80 PPH

Unlock Brigadier General:
Win 12 Medals - 19390 Points - 85 PPH

Unlock Conversation Mode:
At 'Cheat Codes' in 'Setup Menu' enter Start, R1, X, O, Square, R1, R1, R1, Start.

Unlock Intercontinental Mode:
At 'Cheat Codes' in 'Setup Menu' enter Start, X, X, X, O, O, O, Square, Square, Square, Start.

Unlock ALL Boxers:
At 'Cheat Codes' in 'Setup Menu' enter Start, X, O, Square, Square, R1, R1, Square, O, X, Start.

Unlock Scrap-Yard Scene:
At 'Cheat Codes' in 'Setup Menu' enter Start, O, R1, O, R1, X, X, Start.

Unlock Double Speed
At 'Cheat Codes' in 'Setup Menu' enter Start, R1 x10, Start.

Unlock All Weapons:
During game play hold L2 + R2 and enter Right, Right, Down, Up, Left, Left