To unlock the Digimon Shoot Minigame, beat the game once with any character.
To unlock Ex Angimon, just clear the game with all six characters or beat 5 or more people in VS. mode
Complete game in normal mode with any character. After the ending credits, Loweemon will appear from a yellow Digi-Egg.
Keep firing your weapon/spirit shot at his head and repeat as necessary. When the cloud appears, attack it before it zaps you. Then, repeat attacking but avoid his attacks. When he uses his Black Hole attack, use your Speed Run and go to the corner of the screen before he gets you.
When you are Agunimon (fire spirit) and are able to slide evolution to Burninggraymon, jump and press Up + B. Burninggraymon will fly across the screen. Note: If Burninggraymon hits your enemy, it will make a lot of D-Spirit balls fall out, and occasionally some ancient spirits