Area: Hoover Dam
Category: Kill drones
Vehicle type: Either
Goal: Destroy as many drones as you can in 1 minute
Score for Gold: 31

Strategy #1:

Stand or helicopter hover in place where you start, keep turning and firing.

Strategy #2:

The prison bus is my vehicle/bot of choice for drone missions and melee missions (although I use a flying vehicle for one particular melee mission). The prison bus has high energy levels that don't deplete too quickly in bot form when firing it's primary weapon.

Strategy #3:

Use a bot with a good rapid fire laser as its weapon. When the mission starts, hold down Up, R, and Y.