Cheat Codes
Enter the following codes during the "Difficulty Select"
screen to get the desired results:

Unlockables
Fight Unicron
First you need to win the Pacific islands level, then you need to have gotten a total of 30 minicons. When you do these 2 things you can go to the Cybertron level where you fight Unicron in his planet mode.

Codes
Kill all enemies with a single shot
Pause the game, then enter the code. You will have to re-enter this code every time you enter a level.

Square, Circle, Square, Circle, L1, L1, L2, L1

Various Codes
Enter the following button codes during the "Difficulty Select" screen to get the desired results:

Mid Atlantic Level Complete	Circle, Square, Circle, Square, Right, Left, Left, Right
Starship Level Complete	Left, Left, Right, Circle Circle, Right, Right, Left
Alaska Level Complete	R1, Circle, R1, Square, Left, Left, Right, Left
Earth Level Complete	R2, R1, L1, L2, Square, Circle, Square, Circle
Deep Amazon Level Complete	Left, Right, Left, Left, Right, R1, R2, Circle

Autobot HQ Codes
Enter the following at Autobot HQ:

Infinite stealth (Must have convert minicon equipped)Up, Up, Down, Down, L1, L2, L1, L2

Infinite Powerlink Up, Down, Up, Down, Circle, Square, Square, Circle

Turbo Mode=L1, R2, R2, Square, Square, Square, Square, L1

Big Head Mode=Circle, Circle, Circle, Square, L1, L1, L1, L2

L1 Turbo Mode
L1, R2, R2, Square, Square, Square, Square,

To enter the following code, you must 1st pause the game whilst in a level. You will have to re-enter this code every time you enter a level.

Kill all enemies with a single shot
Square, Circle, Square, Circle, L1, L1, L2, L1 Kill any enemy with one shot.

More Cheat Codes
[Pause Game] at any time during gameplay and enter any of the following codes at the pause screen.

Invincibility- R1, Circle, Circle,R1,R2,L1,L1,L2
Stealth Enemies- Left, Right, Left, R1, R2, R1, Right, Right

Enter the following at Autobot HQ:

Infinite Dash- Up Up Square Circle Square Square L1 L2

Disables Minicon Overload (can equip any 4 minicons regardless of power)- R1, R1, L2, R1, R1, L2, Circle, Circle

One Hit Kills
While playing, pause the game and press SQUARE, CIRCLE, SQUARE, CIRCLE, L1, L1, L2, L1. You will hear "Code Accepted" when entered correctly.

Earth Level Complete
R2, R1, L1, L2, Square, Circle, Square, Circle.

Disable Minicon Overload
At the Autobot HQ screen, where you selection your autobot and mission, enter

Disables the minicon overload so you can equip any 4 minicons regardless of power=R1, R1, L2, R1, R1, L2, Circle, Circle.

All Mini-Cons
All Mini-Cons: R2, R1, LEFT, RIGHT, LEFT, RIGHT, CIRCLE,
SQUARE

Starscream G1 Skin
At the bonus menu press: right down left left down up up

Free Road
At the bonus menu press: right left right left right left right

Easy kill bosses and drones!!!!!!!
pause the game and enter this code scuare circle scuare circle l1 l1 l2 l1 and the next time you get involved with a droneboss they will die in a single shot. note: this dosent work on unacron because the code dosent work on that level.

Transformers (PS2) : cheats and hints
# All extras

At the extras menu, press Square(2), Circle, Square(2), Circle, L1, L2. If you entered the code correctly, a message will appear.
# Infinite stealth

At the Autobot headquarters menu, press Up(2), Down(2), L1, L2, L1, L2. If you entered the code correctly, a message will appear.

# Infinite Powerlink

At the Autobot headquarters menu, press Up, Down, Up, Down, Circle, Square(2), Circle. If you entered the code correctly, a message will appear.

# All Mini-Cons

At the Autobot headquarters menu, press L1, L2, Circle(2), Square, Circle, L2, L1. If you entered the code correctly, a message will appear. Alternately, pause the game and press R2, R1, Left, Right, Left, Right, Circle, Square. If you entered the code correctly, a message will appear.

# Turbo mode

At the Autobot headquarters menu, press L1, R2(2), Square(4), L1. If you entered the code correctly, a message will appear.

# Big head mode

At the Autobot headquarters menu, press Circle(3), Square, L1(3), L2. If you entered the code correctly, a message will appear.

# Disable Mini Con overload

At the Autobot headquarters menu, press R1(2), L2, R1(2), L2, Circle(2). If you entered the code correctly, a message will appear. You can now ignore the power limit and equip any four Mini Cons.

# Invincibility

Pause the game and press R1, Circle(2), R1, R2, L1(2), L2. If you entered the code correctly, a message will appear.

# One-hit kills

Pause the game and press Square, Circle, Square, Circle, L1(2), L2, L1. If you entered the code correctly, a message will appear. Note: This must be done each time you enter a new level or leave a level and return.

# Stealth enemies

Pause the game and press Left, Right, Left, R1, R2, R1, Right(2). If you entered the code correctly, a message will appear.

# Alaska with 18 Mini-Cons

At the difficulty selection screen, press Circle, Square, Circle, Square, Right, Left(2), Right. If you entered the code correctly, a message will appear.

# Alaska with 23 Mini-Cons

At the difficulty selection screen, press R1(2), R2, L1, L2(2), Circle(2). If you entered the code correctly, a message will appear.

# Alaska level completed

At the difficulty selection screen, press R1, Circle, R1, Square, Left(2), Right, Left. If you entered the code correctly, a message will appear.

# Amazon Boss defeated

At the difficulty selection screen, press Left(2), Right, L1, R2, Left(2), Right. If you entered the code correctly, a message will appear.

# Amazon Level completed

At the difficulty selection screen, press L1(2), L2, Square(2), Circle, R1, R2. If you entered the code correctly, a message will appear.

# Antarctica with 6 Mini-Cons

At the difficulty selection screen, press L1(2), L2, Square(2), Circle, R1, R2. If you entered the code correctly, a message will appear.

# Antarctica Boss defeated

At the difficulty selection screen, press L1, Left, L2, Right, Square(2), Circle(2). If you entered the code correctly, a message will appear.

# Antarctica level completed

At the difficulty selection screen, press R1(2), R2, L2, L1(2), R1(2). If you entered the code correctly, a message will appear.

# Cybertron with all Mini-Cons

At the difficulty selection screen, press R2, R1, L1, L2, Square, Circle, Square, Circle. If you entered the code correctly, a message will appear.

# Deep Amazon with 6 Mini-Cons

At the difficulty selection screen, press Left(2), Right, L1, L2, Left(2), Right. If you entered the code correctly, a message will appear.

# Deep Amazon with 13 Mini-Cons

At the difficulty selection screen, press R1(2), R2, L2, L1(2), R1(2). If you entered the code correctly, a message will appear.

# Deep Amazon with 16 Mini-Cons

At the difficulty selection screen, press Square, Circle(2), R1, L1, Left(2), Right. If you entered the code correctly, a message will appear.

# Deep Amazon level completed

At the difficulty selection screen, press Left, Right, Left(2), Right, R1, R2, Circle. If you entered the code correctly, a message will appear.

# Earth level completed

At the difficulty selection screen, press R2, R1, L1, L2, Square, Circle, Square, Circle. If you entered the code correctly, a message will appear.

# Mid Atlantic with 17 Mini-Cons

At the difficulty selection screen, press Left, Right, Left(2), Right, R1, R2, Circle. If you entered the code correctly, a message will appear.

# Mid Atlantic with 18 Mini-Cons

At the difficulty selection screen, press L2, Left, Right(2), Left, L2, L1, L2. If you entered the code correctly, a message will appear.

# Mid Atlantic Boss defeated

At the difficulty selection screen, press L2, Left, Right(2), Left, L2(3). If you entered the code correctly, a message will appear.

# Mid Atlantic level completed

At the difficulty selection screen, press Circle,, Square,, Circle,, Square, Right, Left(2), Right. If you entered the code correctly, a message will appear.

# Pacific Island with 24 Mini-Cons

At the difficulty selection screen, press Left(2), Right, Circle(2), Right(2), Left. If you entered the code correctly, a message will
# Pacific Island with all Mini-Cons

At the difficulty selection screen, press L1, R1, L2, R2, Left, Right, Square. If you entered the code correctly, a message will appear.

# Starship with 23 Mini-Cons

At the difficulty selection screen, press R1, Circle, R1, Square, Left(2), Right, Left. If you entered the code correctly, a message will appear.

# Starship with 24 Mini-Cons

At the difficulty selection screen, press Right(2), Square, R1, R2, Circle, Left(2). If you entered the code correctly, a message will appear.

# Starship level completed

At the difficulty selection screen, press Left(2), Right, Circle(2), Right(2), Left. If you entered the code correctly, a message will appear.

# Get Mini Cons at Research Center before fighting Starscream

Instead of going down between the hangers, walk around behind them. If you do not walk in front of Starscream's hanger, he will not come out. Blow up the buildings with rockets. Some of the buildings contain Data Cons. Three of them contain Mini Cons. One of them can be especially helpful against Starscream, as it is the one that constantly restores your energy.

Jazz G1 Skin
At the bonus menu press: left up down down left up right

All missions
At the bonus menu press: down up left right right right up down

Wheres the decepticlones?!
Makes decepticlones stealthly.

Pause th game and press left right left r1 r2 r1 right right
Good luck finding the decepticlones bye.

Megatron G1 Skin
At the bonus menu press: down left left down right right up

Gun turrets+bases
In the megatron level,you can use the gun turrets(note:would be easiest with highjump anda minicon that makes enemys colapse).ever knocked an enemy out of a turret?well if you hav than do so,and then jump in!it is easier with highjump,though I dont need it.hold r1 for rapid alternate attacks,or hold r2 for slowfuse shots with more power.you can also destroy those yellow bases without going in, though you wont get the data-con.

Unlock All Extras
Enter this cheat at the "Extras" screen:

Square, Square, Circle, Square, Square, Circle, L1, L2

Hitchhike on Decepticlone ship Glitch
(Have glide wings and super turbo)Go to the save point at the top of the volcano run around the save point until you see two ships come by the ledge. Glide to the top of the lower ship. Shoot and kill just one of the decepticlones in the higher ship. If you kill both it will just fly away. Glide and boost your self to the open unmanned doorway to the ship and crash inside. If you land you will probably run out the other side.(This may take a few tries at first)Once you are inside you kill the other one. The ship will close its doors and fly away with you inside. If you want to get out you shoot at the floor until it explodes and you will most likely fall to the shore. You wouldn't take damage because there's a glitch that if you fall for too long you regain balance. Another way to get out is to jump on a doorway and turn into a vehicle and accelerate. You will bounce around until you fall out.

GLITCH : MEGABOT
PLAYING AS MEGABOT MAY COST YOU THIS IS THE CHEAT XXXXXXXOOOO

Robovision Optimus Prime Skin
At the bonus menu press: down down up up right right right

Play as lord primus and defeat unicron
When you are defeating unicron go inside him and enter this cheat x o L1 L2 L2 L2 L2 L1 L1 X O O O O O O O