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