1000 Gold
Enter KWNOHIRO as a password at the suspicious looking pink tank in first town.

Boundbomb weapon:
Enter KKHWEEEE as a password at the suspicious looking pink tank in first town.

AirGatling weapon:
Enter GSASINRI as a password at the suspicious looking pink tank in first town to 
unlock the AirGatling weapon for the sub-weapon B configuration. It is for shooting 
down aerial targets only.

Grand Flag:
Enter ODGRITRO as a password at the suspicious looking pink tank in first town.

Angel Wings special part:
Successfully complete the game to unlock the Angel Wings part. 
These allow you to fly without using a lot of fuel. 

Devil Wing special part:
Win all arena battles to earn the Devil Wing special part.

Defeating the Last Master:
The Last Master has three forms. The first two are easy -- shoot him and kill him. 
The last form is difficult. You have to shoot the tank under him and destroy it. He 
will fall down. Make sure you hit his face when he falls down. His armor is weak 
when you shoot him. However, it is difficult to shoot him when he falls down 
because the gears are moving. Be careful, as they may crush you. When the boss 
gets up, the tank that is under him regenerates and you have to destroy it again. 
Repeat this process until he is defeated. Note: Shooting his face has no effect.

Alternate introduction sequence:
Press Triangle at the "Press Start" screen.

All gear in battle mode:
When first starting out in story mode, choose a tank and battle with it to gain 
money. Then once you have a lot of moneym go to the shops and buy equipment. 
Equip it and save the game. After this, sell it and buy different items. Repeat this 
until you have all the gear desired. Once done, go to battle mode and 
select "Custom Tank". You will now able to customize it with any gear desired.

Alternate route:
When you get to the point where you have the option to do the Naldnick level at 
night using night parts, do not do so, If you do, you will have to do a very difficult 
city level where you must destroy blockhouses without damaging the town. 
Instead, do the other level you have access to. Then, do Naldnick at Daytime. You 
will then skip the blockhouse level altogether. 

Black and fire paint job:
Select the BHE tank (the only one with a body, turret, and heavy signs), then 
choose the urban paint job. It should be all black with fire on the front.