The Door Prize will often award you instant multiball. Always shoot it when it's lit.
Plunge the Crypt to the left of the rollover lanes for 1M.
Flippers usually sit tall enough to trap a ball from a ramp feed by simply holding the flipper up. Backhand left ramp all day for millions.
In Multiball, Door Prize saucer is 500K every time, good alternative if flippers are weak and you are struggling to make the left ramp.