Well we ran a Fire/Atomic Blaster and a Fire/Kinetics Corruptor. Really, its just a matter of only doing the objective. Team TP from Synapse to Steel Canyon for the first mission, and then Team TP to Boomtown for the first Boss defeat later in the mission. I personally dont think a Kheldian will be as good as a Blaster at that low of level, but id love to be proven wrong. That being said, theres still a lot of potential time to save. During two of the defeat all missions, we had missed 2 Clockwork that had ran off.