Enter at the title screen with either control 1 or control 2
code: Up, Up, Down, Down, L1, R1, L2, R2, L3, R3

Best Ending - Complete stage 7
Bill II (Bill in a thong) - Complete stage 7 with overall S rank
Gallery - Complete the game with A rank
Hidden video (Jaguar comedy) - Complete stage 7 with overall S rank
Jaguar II (Jaguar in a thong) - Complete stage 7 with overall S rank
Stage 6 - Complete 5 stages with overall A rank
Stage 6 (Training) - Complete Stage 6
Stage 7 - Complete stage 6 with A rank
Stage 7 (Training) - Comlete Stage 7
Theater - Complete the game with B rank
Weapon Set D - Complete Stage 5
Weapon Set E - Complete Stage 6
Weapon Set F - Complete Stage 7