Unseen Enemy addon - Alien Assault

The front line of your attack has been cut off from the rest of your force. Their supplies and ammunition are running low, unless a new supply route can be found vital spearhead units will suffer suit power failures and run out of ammunition. Mothership scans have revealed the possible existence of supply routes in another part of the hulk. Unfortunately this is a more labyrinthine section of the hulk which the mothership scanners cannot map accurately and is ideal to the Genestealer's style of close quarter fighting. Supplies are very bulky and can only be transported down the wide corridors so these must be identified before a supply route can be opened. Objective: Activate the markers to signal the dropships about the wider sections of the map, and secure the supply route. .