Dance with four elephants around the chair.

Watch the demo mode to the end.

Upload some music to your system, play that music while playing with detuned, and maximize one of the distortive sound effects.

Use the pump controls to pump up and release completely an effect.

Use the right stick to crank up an effect.

Finish the game in Normal Mode

Defeat 50 enemies with the Dragon Sniper

Find 90 treasures

Defeat 70 enemies with the SAS - 12

Defeat 20 enemies with the Pistole

Defeat 50 enemies with hand-to-hand combat

Defeat 70 enemies with the FAL