Epicurus has already suffered an assault. The colonists set off a bomb that destroyed the invaders, and killed themselves as well.
The colony is already on fire when we arrive and won't survive any sort of assault. It's going to be a long night.
On the positive side, the colonists rigged energy cells here to explode. Just clicking on them will detonate them and damage all surrounding enemies. And we have long passes leading to the colony that offer a wide variety of places for defenses. Be careful just building around your colony though, it is already close to falling.
The invaders have failed here once. Their next assault will test us.
As if that wasn't enough, this mission features a new enemy. The Gliding Crane, an air transport that must be shot down before it reaches its destination. If you don't it will drop enemies close to your colony.