Unlock new modes:
Unlock Arcade Mode, First Person View, Parts Index, and The Grand Battle by beating "A New Journey".

Change level appearance:
While in Vs mode highlight Basic Arena or No Man's Land and then press Z.

Dark Star VS mode level:
In VS mode play 50 matches.

VS battle CPUs:
Succesfully beat Story mode.

X Laser:
While in Grand Battle, go to Bogey's Café. Then go behind the counter and look on the shelf.

Ray Warrior:
In all of the Amusement Park tournament cups get a gold trophy. You must then talk to the policeman at the front gate.