|When Feral Mohmils Attack||The Sage in the Lighthouse|
Exterminator - Side with CIR and complete mission. - 1000 Plex.
Rat King - Side with the Mohmils and complete mission. - 1000 Plex.
Negating the Navy - Side with the Mohmils and complete mission without a single base being destroyed. - 2500 Plex.
If you've sided with the CIR, it'll be you and the two Nyrceffs against the bases. The Nyrceff are very tough, but not invincible. Try not to get caught between two of the bases unless you want to have two sets of turrets firing at you. Mohmils in rank 4 hulls will start spawning several seconds after you've made your decision on who to side with.
If you've sided with the Mohmils, then after the Nyrceffs are defeated the CIR will start sending A5 Strata Gunships to destroy the bases. The Gunships will use Rocket-on-a-Rope to get to the bases, where they'll attack with Cruiser Strike. If they come under attack they'll use Amplify Shields for damage mitigation and Maintenance Drones for healing. They will spawn in waves on the right side of the map and make their way through the asteroid field to the bases. The first waves will have two ships attacking, slowly increasing to four at once. Try to take out as many of them as you can while they're still moving through the asteroids.