Arcade levels:
To unlock the Arcade levels, complete each level in Adventure mode. In Arcade mode, it is more difficulty and you will only get three ships.
Challenges:
Unlock the following challenges by performing the corresponding tasks:
CHALLENGE – HOW TO UNLOCK
Challenges 1, 2 – Complete Mitsurin Jungle
Challenges 3, 4, 5 – Complete Mokuzu Depths
Challenges 6, 7 – Complete Sunahara Desert
Challenges 8, 9, 10 – Complete Hibashira Plains
Challenges 11, 12, 13 – Complete Sekihi Belt
Challenges 14, 15, 16 – Complete Sekai Outpost
Challenges 17, 18, 19 – Complete Chuuroh City
Challenges 20, 21 ,22 – Complete Zenshoh Station
Challenge mode unlockables:
Unlock the following bonuses by Completeing the corresponding challenges:
BONUS – HOW TO UNLOCK
Chuuroh City concept art – Complete Challenge 18.
Chuuroh City music – Complete Challenge 17.
Enemy ‘Masked Raider’ model – Complete Challenge 19.
Enemy ‘Mr. Slater’ model – Complete Challenge 10.
Enemy ‘Squidman’ model – Complete Challenge 13.
Enemy ‘Triple Zero’ model – Complete Challenge 5.
Enemy ‘Whale-Bot 3000’ model – Complete Challenge 16.
Hibashira Plains concept art – Complete Challenge 9.
Hibashira Plains music – Complete Challenge 8.
Mitsurin Jungle concept art – Complete Challenge 2.
Mitsurin Jungle music – Complete Challenge 1.
Mokuzu Depths concept art – Complete Challenge 4.
Mokuzu Depths music – Complete Challenge 3.
Sekai Outpost concept art – Complete Challenge 15.
Sekai Outpost music – Complete Challenge 14.
Sekihi Belt concept art – Complete Challenge 12.
Sekihi Belt music – Complete Challenge 11.
Sunahara Desert concept art – Complete Challenge 7.
Sunahara Desert music – Complete Challenge 6.
Zenshoh Station concept art – Complete Challenge 21.
Zenshoh Station music – Complete Challenge 20.