Play as MAX in battle mode:
Obtain all Lightning Cards in normal mode. Then while in battle
mode, press Z at the player selection screen to switch
Bomberman to MAX.
Play as Golden Bomber in battle mode:
Win any match in battle mode then replay the same match without
changing any other options (except for the stage, if desired).
You will play as Golden Bomber during the replay.
Group A/B options:
Complete the game in normal mode once to unlock the "Group A/B"
option at the stage selection screen in battle mode. Press
Up or Down to toggle between Group A and Group B. Group A gives
you access to the basic power-ups during standard battle mode
matches, while Group B gives you access to the more advanced
power-ups. Note: The traps of most of the stages change when
you select Group B.
Collect all the Charaboms including the last one in level 5-3,
to unlock the "Mini Game" option at the main menu.
Change view in battle mode:
This trick works for any battle game mode. Immediately before
the battle game starts, when "Ready" appears, use the C-stick
to change the angle of the field.
You cannot do this after the game starts.