9,100,000 Points
     Pause gameplay and press Triangle, Square, L1, Circle, R1, X, R1, X.

All Boarders
     Pause gameplay and press Triangle, Square, L1, Circle, R1, X, R1,
Triangle.

Challenges Completed
     Pause gameplay and press Triangle, Square, L1, Circle, R1, X, R1,
Square.

Alien Unlocked
     Pause gameplay and press Triangle, Square, L1, Circle, R1, X, R1, X.

Shoot Projectile
     Pause gameplay and press Square, Circle, Triangle, R1. Then press
R2 to shoot.

Slow-Motion Mode
     Pause gameplay and press Square, Circle, Triangle, L1. Then press
L1 + R1 in the air.