When getting the last mode shot a video will display. When the eyes of a character flashes pull the trigger for an extra million points
After you get a replay, shoot the ramp for 25 million.
Shoot the lit saucer and then make two quick ramp shots for a quadruple jackpot.
Get modes by hitting Lethal Weapon 1-2-3 shots in any order. Each mode is worth an increasing amount of points (5/10/15/20/25 million)