Advance Wars Unlockables

Finish field training mode to unlock the "War Room", "Campaign", "Design Maps", "Stats", and "Special Intel" options.

Select the final battle in field training. Win this battle to quickly unlock all options that require field training to be completed.

Push Start + Select + B + A while playing the game. This may have adverse effects if you have plugged the Game Boy Advance into the GameCube.

Press and Hold L + Right + Select when turning on your GBA.

Press and Hold B during your turn

Finish campaign mode. Open the battle maps screen and purchase the "Advance Campaign" item for one coin. Press and hold Select and select campaign mode to begin an advanced campaign, with a more difficult artificial intelligence.

If you use Andy to win the Captain Drake, Naval Clash, Wings Of Victory, and Battle Mystery missions in campaign mode, Drake can be purchased for 50 coins at the Battle Maps screen when the campaign has finished.

If you use Sami to win the Captain Drake, Naval Clash, Wings Of Victory, and Battle Mystery missions in campaign mode. After this is done you need to win the Rivals battle. Now Eagle can be purchased for 80 coins at the Battle Maps screen when the battle has finished.

Use Max to win mission 4 in campaign mode. Grit can be bought for 50 coins at the Battle Maps screen after the campaign is over.

Finish the campaign mode under the normal difficulty. Now Kanbei can be purchased for 50 coins at the Battle Maps screen when the campaign has finished.