– Swap out the central Gun Tower for a Flamethrower Tower to maximise your damage output in this key area. – If you hear the sound of a Medic about to arrive, select an item if you have any and when you spot the trail of Fieldrunners, drop your long-lasting item at the start of the pack to take them all out quicker.
– Placing a Hive Tower near the top will soften up all units for a faster finish. – Keep using any items you have. Remember: In Time Trial mode, the quicker you dispatch one wave, the quicker the next one starts.