Custom Robo Arena - Nintendo DS
Sudden Death stage:
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Win the Robo Cup, then enter one of the laboratories on the upper floor
of NeoBrain. Talk to the scientist facing the glass and defeat him to
unlock the Sudden Death stage for purchase.
Carat Robo:
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Complete all the Robo type Mission battles, then defeat Catoreya.
Hadoron Robo:
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Complete all four Greyham Boss data and Hadoron data to unlock Hadoron
and his parts.
Hiykko Robo:
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Win the Great Robo Cup. Then, go to the Team No.1 Clubhouse. Talk to the boxes
above the stairs to begin a battle. Defeat your opponent without using a combo
that gets over 380 damage.
The Underground stage:
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Win approximately twelve Grudge matches, then go in front of the clubhouse and
defeat your shadow self to get illegal parts and the Dark Commander Mark. Then,
talk to the suspicious man in the southwest house in the Bayside area to access
a secret passage to The Underground.
Special Robos:
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Successfully complete the Great Robo Cup. Then, complete one of the following
tasks to unlock the corresponding Robo:
Carat : Successfully complete all the Robo type Mission battles, then defeat