Mode: Battle Enemies
Enemies: Stormtrooper, Beach Trooper, TIE Fighter Pilot, Imperial Officer, Imperial Shuttle Pilot
Walk end-to-end in only one alleyway
Mode: Collect Studs
Large metal modules at the end of alleys have about 10 purple studs inside them each.
Mode: Stud Hunt
Hunt: 188,000 studs
Should be quick if you find power-ups quickly as well