Various cheats
     Beat  the game. Then while playing press pause, hold R1 + R2 + L1
+ L2 and enter the cheat codes.

Invincibility                Square, Circle, Square, Down.
Perfect mode                 Circle, Up, Triangle, Down.
All attack upgrades          Down, Up, Triangle, Square.
Full health                  Square, Square, Circle, Circle.
Unlimited missile weapons    Square, Square, Up, Circle.
Always devastating           Triangle, Down, Triangle, Up.
Target indicator             Up, Circle, Down, Square.
Unlock all interviews        X, Square, X, Up.
Unlock Faramir               X, X, Triangle, Triangle.
Unlock Frodo                 Triangle, Circle, Circle, Circle.
Unlock Merry                 X, Down, Down, X.
Unlock Pippin                Triangle, Circle, Square, Down.

Co-op codes:

Share experience             Down, X, X, X.
Share health                 Triangle, Up, Square, Square.
Unlimited respawns           Circle, Square, Up, Circle.

Aragorn codes:

Three-hit combo              Square, Down, Circle, Up.
Four-hit combo               Up, Square, Triangle, Down.
All special abilities        Down, Circle, Triangle, Triangle.
1,000 experience points      Up, Square, Triangle, X.
Level 8 skills               Up, Square, Triangle, Up.
Restore missiles             Triangle, Square, Square, Triangle.

Gandalf codes:

Three-hit combo              Down, X, Triangle, Down.
Four-hit combo               Down, Triangle, Up, Circle.
All special abilities        Up, Down, Triangle, Circle.
1,000 experience points      Circle, Triangle, Up, Down.
Level 8 skills               Circle, Square, Down, Down.
Restore missiles             Triangle, Down, X, Square.

Gimli codes:

Four-hit combo               Triangle, Square, Up, X.
1,000 experience points      Circle, Circle, Triangle, X.
Level 8 skills               X, Circle, Down, Square.
Restore missiles             Circle, Circle, Circle, X.

Legolas codes:

Three-hit combo              Triangle, Triangle, Triangle, Down.
Four-hit combo               X, Circle, Triangle, Square.
All special abilities        Triangle, Circle, X, Circle.
1,000 experience points      X, Triangle, Up, X.
Level 8 skills               Square, Up, Up, Down.
Restore missiles             Triangle, Triangle, Triangle, Down.

Merry codes:

Four-hit combo               Triangle, X, Square, Square.
1,000 experience points      Down, Down, Square, X.
Level 8 skills               Down, Triangle, X, Square.
Restore missiles             Square, Circle, Circle, Triangle.

Pippin codes:

Four-hit combo               X, X, Down, Circle.
1,000 experience points      Triangle, X, Square, X.
Level 8 skills               Square, Up, Up, Circle.
Restore missiles             Up, Circle, Down, Square.

Sam codes:

Four-hit combo               Up, Down, Triangle, Triangle.
1,000 experience points      Triangle, X, Down, X.
Level 8 skills               Circle, Circle, Triangle, Triangle.
Restore missiles             X, X, Circle, X.

Faramir codes:

Four-hit combo               X, Square, Up, X.
1,000 experience points      Square, Triangle, Up, Square.
Level 8 skills               Circle, Down, Down, Down.
Restore missiles             Triangle, Up, X, X.

Frodo codes:

Four-hit combo               Down, Square, Down, Circle.
1,000 experience points      Down, Triangle, Up, Down.
Level 8 skills               Circle, Circle, Down, Down.
Restore missiles             Triangle, Triangle, Triangle, Circle.