Here are some cheats and tips for the game Digimon Rumble Arena 2.
One-hit kills:
Press Right, Up, Left, Down, A, L + R at the title screen.
Evolve energy item:
Press Y, Right, Down, B, L, A, R, A, Y at the title screen.
Evolve meter always full:
Press X, Right, A, Y, Left, B, L + R at the title screen.