CheatCodes.com has all the official Advance Wars 2: Black Hole Rising GBA cheats to unlock everything. If you know of any that we don't have, please let us know.
All published and official codes as of Wednesday June 19, 2013 for Advance Wars 2: Black Hole Rising are shown below.
Erase save data by holding L+Right+Select before turning the game on.
To get Sturm, beat the campaign and get an "S" rank for the overall rating. Then you can buy Sturm for 5000 coins. Now you can use him to beat the War Room maps easily.
To get the chinese map, hold L and R button when you go to the design map, when the screen turns black. If you did it correctly, the mountains will spell something in chinese. I got two of my friends and they both said it means "In Heaven."
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. Enjoy the music!
Blue Moon missions cleared:
Olaf - 600 coins Grit - 600 coins Colin - 600 coins (appears after buying Olaf and Grit) Yellow Comet missions cleared: Kanbei - 600 coins Sonja - 600 coins Sensei - 600 coins (appears after buying Kanbei and Sonja) Green Earth missions cleared: Eagle - 600 coins Drake - 600 coins Jess - 600 coins (appears after buying Eagle and Drake) Game cleared: Adder (Black Hole) - 2000 coins Lash (Black Hole) - 1500 coins Hawke (Black Hole) - 3000 coins Nell (Orange Star) - 3500 coins (appears if your overall ranking was an "A") Hard Campaign cleared: Hachi - 5000 coins
Beat all blackhole campain levels to unlock Adder at the store.
After buying every thing from Hachi you can buy him for 5000 coins. He is kinda a mix between Colin and Sensei.
Buy either Grit or Olaf, Collin will appear in thier area.
Buy either Drake or Eagle, Jess will appear in their place.
Buy either Sonja or Kenbei, Sensei will appear on thier area.
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