|Donuts to Drones|
|Best Rings in the Rings||Vegamite|
Trench Warfare - Complete mission without a single drone making it out of the trench. - 1250 Plex.
Clean Signal - Complete mission with all Relay structures intact. - 1250 Plex.
Drones will start attacking from the south trench first. You should set up most of your turrets there. Remember to space out the friction beam drones so that the drones will have to spend as much time as possible in spaces where the turrets can fire at them. After that, move to the north trench, place the rest of the deployables, and then move out in front of the turrets and start firing down the trench yourself.
If you think you've done a reasonable job with turret placement, then resist the temptation to chase after any drones that get past you. The turrets and friction beam buoys behind you should finish them after you've softened them up.
Try to cover as much space in each trench with friction beam buoys and turret firing fields as possible, to give your defenses every chance to destroy the attackers.