For tournament play choose the Halfling Rogue character and start in the town of Arabel complete the Purple #1 mode then complete Arabele Dungeon… next to Kobold town and play the Purple #2 mode..
Hit the dragon a few times to light the right orbit for dragon multiball.
During Dragon Multiball, JP values decrease for every ball that drains. Consider using a Shield pre-emptively to keep balls in-play.
Right ramp and left orbit can often be hit when 'shield staging' by letting the ball rest on the shield and flipping.
After getting two balls locked for Gelatinous Cube lock a third ball at the left orbit to start a 4-ball multiball.
After getting one ball locked for Gelatinous Cube Multiball lock a second ball at the left eject, shortcut, or right orbit.