From left flipper you can shoot the Snikt target (up the middle to the right of Wolverine shot) This increases your playfield multiplier.
If the ball goes to the plunger, from a soft R orbit shot, let it autoplunge. You'll get a chance to shoot the R ramp for a super skillshot.
Disco multiball is started via the left spinner. It's 60 spins at first, then 120, etc. This can't be combined with battles or quests.