Recommendations:
1. Find all of the ammo stations as you will need them.
2. Always use Quick Revive or Who's Who.
3. Make a crawler before opening the next area.

Mission:
1. Obtain the first key card to unlock the glass double doors (see key card locations below).
2. Kill Brutus and then destroy all five of the security cameras (see camera locations below).
3. Obtain the second key card and open the door.
4. Kill the Mangler, turn on the power and close the two valves.
5. Drop down the floor vent, kill the spiders and Skullbreaker.
6. Obtain the third key card and use the PaP machine.
7. Open the doors that the valves unlocked, grab a free perk and kill the zombies within.
8. Open the doors with the third key card, grab a free perk and kill the Mechz/Margwas.
9. Call the lander and escape.

#1. Inside the vault that is located in the room with the invisible zombie.
#2. Inside the vault that is located in the lab unlocked by the security cameras.
#3. Inside the vault that is located underground near PaP.

#1. Above the first set of glass double doors.
#2. In the corner of the lab across from Quick Revive.
#3. Above the second set of glass double doors.
#4. Centered above the large set of double doors near Juggernaut.
#5. Above the door that is located across from the area being unlocked.