Background
With the East Gate closed, now it is time for your to look to your squad, Captain.
The sensorkits show that the security entrance to the gatehouse is still accessible.
If you move quickly, the Templar commanders may still be able to hold the inner gates and allow you to join your defending brethren.
Primary Objective
Lead your squad westward.
Using fire, gauntlet and Leviathan, cut a bloody swath through the xenos. You must kill enough of their oncoming horde to open the possibility of a final sprint up the secondary security tunnel.
Use the maze-like tunnels to the west of the Gate to stage your bloodbath.
Secondary Objectives
Prevent death among your loyal Templar soldiers.