Twisted Metal 4

Special moves:

Jump                   Up, Up, Left  
Shield                 Up, Up, Right  
Hyperspace             Up, Up, Down, Down  
Freeze                 Left, Right, Up, Up  
Invisibility           Down, Down, Up, Up  
Massive attack         Up, Down, Up, Down, Up  
Rear attack            Right, Left, Down, Down  
Rear freeze            Left, Right, Down, Down  
Rear massive attack    Up, Down, Up, Down, Down  

Enter the following as passwords:

God Mode               Down, Left, L1, Left, Right

Enable SweetTooth      Start, R1, Right, Right, Left

Enable Minion          Triangle, L1, L1, Left, Up

Enable MoonBuggy       Start, Triangle, Right, L1, Start

Enable Crusher         Down, R1, Right, R1, L1

Enable RC Car          Up, Down, Left, Start, Right

Enable Super Auger     Left, Circle, Triangle, Right, Down

Enable Super Axel      Up, Right, Down, Up, L1

Enable Super Slamm     Right, L1, Start, Circle, Start 

Enable Super Thumper   Circle, Triangle, Start, Circle, Left

Start in Amazonia      Circle, L1, Start, L1, Start

Start in Bedroom       L1, Right, Left, Left, L1

Start in Minions Maze  Start, R1, Left, R1, R1

Start in Neon City     Left, Triangle, Right, Right, Left

Start in Oil Rig       Start, Left, Up, Start, Circle

Start in Road Rage     Start, Start, Down, Circle, L1

Start in Carnival      Circle, Left, Down, R1, L1

Unlimited specials     Triangle, L1, Down, Triangle, Up

Napalm only pick-ups   Right, Left, R1, Right, Circle 

Remotes only pick-ups  Up, Right, Down, L1, Triangle   

No health or           Circle, Start, Left, L1, Start

Weapon pick-ups 

Faster weapons         R1, L1, Down, Start, Down
 
CPU only shoots P1     Right, Triangle, Right, Triangle, L1 

Less traction          Down, Triangle, Down, L1, R1

Enable memory card     Start, Start, Start, Start, Start 

Enable Bosses:
Beat the game with any character to be able to play as the bosses.

Extra Deathmatch Levels:
Beat any level in Tournament mode and save the game to the memory card. Now go to Deathmatch and the level you beat should be selectable.

GameShark Codes

Infinite Lives P1      8005a3c80004
  
Infinite Ammo          d01b66b0ffff 
(All Players, Weapons) 801b66b62400
 
Infinite Turbo         d01b9708ffec 
(All Players)          801b970e2400
 
Infinite Special       d01ae568070c 
(All Players)          801ae56e2400 

Infinite Lives         800373e22400 
(All Players)          d01bbf3c3d29 
                       801bbf422400 

Rapid Fire             d01b4da8182b 
(All Players)          801b4dae2400 

Infinite Lives P2      8005a4380004 

Infinite Lives P3      8005a4a80004 

Infinite Lives P4      8005a5180004 

Infinite Special       8004eca00001 
Weapon

Maxed Out              8004ec800001 
W/ All Weapons 

Freeze Special Weapon  8004ec8a0001 

Massive Attack         8004ec900001 
Special Weapon

Infinite Checkpoint    800c52e80f0f 
+ Lap Time