Video mode all day is a good strategy (D-O-G over and over). It's a safe shot, it collects junk, and value increases 500K each time.
Wait on Toilet Adventure until MB is ready. Start Toilet, then MB. Every switch scores toilet value. During MB this can add up fast.
If you get Mamuska mode for Time Machine, toilet and crane trigger lots of switches for productive mode scoring.
Collecting the cuckoo clock junk lights time machine
Taking the regular multiball with mamushka running will give you your best points - light the time machine, prepare the multiball, shoot the time machine, start the multiball, let the balls drain and rip the plunger spinner as much as possi
Autoplunges
Don't use reflexes in Save the Girl. Shoot right after you see the legs and hope the dog follows. It takes some luck, but it's not too hard.
Bash crane, nearby standups, or sneak behind to spell MULTIBALL. Crane for jackpot, then crane shot behind wrecking ball for super jackpot.
Running from Spike easier than shooting him. Use flippers to move junk selection off hair dryer b/f plunging & after a successful run.
If you see 3:33 on the display after shooting Time Machine, flip both flippers 3 times for Secret Mania.
Start button can be used as a "smart" button to blow away saucers if you happen to get Attack from Mars mode for your Time Machine.
At midnight the game will start Midnight Madness multiball where all targets are worth 75,000.
Time out the 4 adventure modes to make it to Outer Space 4-ball MB. You retain junk after, so you can "play" through them "quickly" again.