Unlock New Co's
To unlock Olaf, Grit and Colin, beat the final Blue Moon battle. Colin will appear after buying Olaf and Grit. To unlock Kanbei, Sonja and Sensei, beat the final Yellow Comet battle. Sensei will appear after buying Kanbei and Sonja.

Play as Adder
Complete all Black Hole campaign levels to unlock Adder at the store.

Play as Colin
Buy Grit or Olaf at the store.

Play as Drake
Complete all Green Earth campaign levels to unlock Drake at the store.

Play as Eagle
Complete all Green Earth campaign levels to unlock Eagle at the store.

Play as Grit
Complete all Blue Moon campaign levels to unlock Grit at the store.

Play as Hachi
Complete all the hard mode campaign levels to unlock Hachi at the store or buy everything in his store.

Play as Hawke
Complete all Black Hole campaign levels to unlock Hawke at the store.

Play as Jess
Buy Drake or Eagle at the store.

Play as Kanbei
Complete all Yellow Comet campaign levels to unlock Kanbei at the store.

Play as Lash
Complete all Black Hole campaign levels to unlock Lash at the store.

Play as Nell
Complete all campaign levels to unlock Nell at the store.

Play as Olaf
Complete all Blue Moon campaign levels to unlock Olaf at the store.

Play as Sensei
Buy Kanbei or Sonja at the store.

Play as Sonja
Complete all Yellow Comet campaign levels to unlock Sonja at the store.

Play as Sturm
Complete campaign mode with an average "A" rank or get an average of an "S" rank on either normal or hard campaign mode.

Sound Test
Complete campaign mode with an "S" rank on either normal or hard campaign mode to unlock the Sound Test at the store.

Blue Moon Campaign
The map to the secret lab level is in the unoccupied building across from Lash's headquarters in the Toybox level. You must capture the city in order to get the map.

Green Earth Campaign
In the Inking Feeling level, the secret map is found in the city in the southern-most city on the Western Isle. You must capture the city in order to get the map.

Orange Star Campaign
In the Flak Attack level, capture the city that is located about two squares above your headquarters.

Yellow Comet Campaign
In the Show Stopper level, the secret map can be found in the southwestern most neutral city. You must capture the city in order to get the map.

Neo-Tanks
Find one of the Black Hole Army maps. Finish the missions that the map gives you. You will be able to build Neo-tanks with that country.

Sound Room
To unlock the sound room, beat the campain and buy it from Hachi for 5000 points. After you buy it, go to battle maps and press select.

Japanese Map
Go to ''Design Mode'' and click on ''Map''. Then hold the L and R buttons while it's loading. Once you get there, you should see a map with three Japanese letters on it made out of mountains.