Defeat Stark twice in the grudge matches. The first time he will use his regular Robo, then he will use AIRS. You can find AIRS' parts in the Underground Shop.
Carat
Beat all Robo type Mission battles, then beat Catoreya.
Easy money
Defeat Pete with a "Perfect" to get about $51.50.
First Exam Answers
Use the following answers to pass the first exam:
Question 01: C
Question 02: B
Question 03: C
Question 04: A
Question 05: C
Question 06: B
Question 07: A
Question 08: B
Question 09: A
Question 10: C
Question 11: C
Question 12: B
Question 13: A
Question 14: A
Question 15: B
Question 16: B
Question 17: A
Question 18: C
Question 19: B
Question 20: B
Grudge Match fighters
Complete the indicated task to unlock the following fighters for the Grudge Match.
Fighter
How to unlock
Cleaver
Get 20 illegal parts.
Eddy
Win all other grudge matches except for Liv.
Hardoron
Defeat the four Greybaum boss data.
Kindaj
Get10 illegal parts.
Liv
Defeat Eddy.
Marv
Complete level 10 in the arcade (just the Robo).
Marv's parrot
Get 7 gold trophies in the arcade.
Sling
Get 15 illegal parts.
Stark
Get "Marquises" rank.
Sythe
Use 20 illegal parts.
Yourself (first time)
Win 10 to 13 grudge matches.
Yourself (second time)
Defeat Hadron.
Hadoron
Beat all 4 Greyham Boss data and Hadoron data, and you will recieve Hadoron and his parts.
Hiykko Robo
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.
Illegal Robos
Go to the underground. Go to the middle door then talk to the clerk selling parts.
King's Throne diorama
Reach "King" rank, then talk to Lambda Halburn at Neobrain.
Meijel, Nanase set and key to the underground
Beat your shadow self above ground.
Minstrel
Beat Hajime in your classroom after he brings Saki to school.
Other Illegal sets
Purchaseable in the Underground for Robos: 50000 credits, Guns: 50000 credits, and the rest of the parts 20000 credits.
Ray
Defeat Eddy and Liv will appear at your clubhouse. Defeat her.
Ray 01
Go to the underground. Go to the middle door then talk to the clerk selling parts.
Ray and Sagitarius Gun
Beat Saki in your classroom after she returns.
Ray II Dark
Beat your shadow self in the underground the second time.
Ray Mk Ii Robo
Win the Great Robo Cup. Then, go talk to your father at his lab.
Ray Sky
Go to the underground. Go to the middle door then talk to the clerk selling parts.
Shrinking parts
At the end of the game, after purchasing the Pipit Robo, the Jameson Robo, all Amun parts, equip the Amun parts to Jameson, then Pipit, then Jameson again. The Amun gun and Amun bomb parts will have shrunk to the size a normal gun would be, instead of giant. They will look superdeformed on the Jameson robo.
Sudden Death stage
After beating the Robo Cup, talk to the scientist facing the glass in one of the laboratories on the upper floor of NeoBrain. Beat him, purchase stage.
The underground
Beat a dozen grudge matches, then beat your shadow self. Once you beat him, talk to the man in SW bayside to open the secret entrance.
Victory diorama
Reach "King" rank, then talk to Lambda Halburn at Neobrain.
X-ray Robo
Win the Great Robo Cup. Then, go to the police station. Talk to one of the people at a rear desk to buy the X-Ray Robo for 50,000 credits.
