Here is the full list of all 17 KAMUI achievements.
Mass Production Model Available
Shoot down 10,000 enemies
Mission Complete
ZAFFIQUEL Defeated
NOUSU(NEURAL NEST) Defeated
SCORPIO Defeated
GUARDIAN SOLDIER Defeated
KAMUI #0(Modified) Defeated
OUGUMO Defeated
Score Over 5,000,000
Shoot down 1,000 enemies
KOKUTAKA Defeated
SOURYUU Defeated
Shoot down 100 enemies
Score Over 10,000,000
Score Over 20,000,000
1 Credit Cleared