http://goannasvencoop.com sc_dead_zone4_final Mission: 1-Infultrate the secret base. 2-Kill everyone in the facility. 3-Find entrance to lower level labs. 4-Rescue shocktroopers. Mission brief: You will be met with tough resistance. The base is heavily guarded by Apache helicopters. Xen is sending in troops to save the shocktroopers with the intent of creating an ally against the army of zombie grunts, but to no avail. Instead of creating an ally they find themselves fighting more than just the grunts. Once you have cleared this section of the facility procede on to the lower levels where the shocktroopers are being held. The shocktroopers are in poor health therefore they won't be much help. Once released they will aid you against the enemy the best they can. ============================================================