Get five Perfects and successfully complete level 9.
Gate 2
Get 10 Perfects and beat Level 11.
Gate 3
Get 15 Perfects and beat Level 28 or 29.
Ranks
Complete the indicated task to earn the corresponding rank.
Ensign Rank: Get one Perfect.
Co-Pilot Rank: Get three Perfects.
Pilot Rank: Get four Perfects.
ACE Rank: Get 10 Perfects.
Admiral Rank: Get 25 perfects.