Mode: Battle Enemies
Geonosian, Battle Droid (Commander), Battle Droid (Geonosis)
Run back and forth between two circular platforms, and they will come to you.
Mode: Collect Studs
Pay attention to enemies as large crowds can really start to build up behind you quickly
Mode: Stud Hunt
Hunt: 542,000 studs
Pay attention to the hanging, moving, factory buckets, as their paths contain a lot of purple studs