Objective: Travel in the underground ducts to locate the Communications Center.
When the elevator doors open, stay where you are and kill all the guards you see. They will start appearing out from behind the crates. As you move forward, watch for overhead fire - a few light guards will do their best to let you know youΓÇÖre not welcome here. Take out as many as you can, then climb up the stairs and collect shells and Armor Shards if need be.
Exit this room and turn left - watch out for the Enforcer, grab the health behind the crate in the corner, then turn left again into the large room. Take care of the Strogg on your right but turn back to touch the red flashing button to open the wall with the Machine Gun and bullets.
Go straight towards the wall with the large map on it, while waiting for the overhead fire from guards. Look in the corners to grab the health packs and ammo, then turn left and enter the elevator.
Exit onto this floor but donΓÇÖt enter the hallway with the yellow glow. Steer left and then left again while taking down guards. Watch for the wall to open with even more guards as you turn the corner and enter the room that looks over where you entered Level 2. Take a look around since theyΓÇÖll be some goodies to snag as well (Armor Shards, bullets and health) and then carefully drop back down to get the health on top of the crate. Exit this room just like you did before, and enter the elevator again.
This time, walk into the yellow hallway and right outside onto the ledge. A few Enforcers and guards will try to stop you but hopefully you still have the machine gun to take care of them. When you walk outside, hang a right and go down the stairs.
Turn left and walk straight into the smaller of the two tunnel holes (you donΓÇÖt have to crouch). Make a left and then a quick right, and notice the crack in the wall to the right side - shoot it to uncover a secret.
Head back the way you came in (back outside) and make a quick left to enter the larger tunnel with the circular opening. Shoot the opposition and touch the button on the wall to open up the vertical shoot. Dive in to enter Level 3.
After returning from level 3, walk into the room with the lever in the middle and pick up the goodies against the right wall. Hit the lever by pressing up against it - this will throw down the bridge. You may want to shoot the Enforcer in the back (donΓÇÖt worry - we wonΓÇÖt call you a coward!) and continue on toward the left side of this room.
If you need it, push the container closer to the crate with the health on it and use it to climb up. Otherwise, continue on straight outside and shoot down any Flyers that may be after you.
Enter the hallway on your immediate right and follow it along to the room with the bridge.
Cross over and through the doors at the other end. Guards can hide well here so watch out. You can drop behind the first indentation on the left (with the red square light) to a secret underground area with lots of ammo, health - and enemies (six on the hard level)!
Walk up the stairs and take out the Gunner. Jump onto the boxes in this room to grab the Quad Damage, and press the button on the wall to open the door, and exit the unit - congratulations!
Unit 1 Level 2: Secrets
Secret: 1 - Shoot at any odd-looking walls to uncover secrets like this. Pick up this shotgun and keep going.
Secret: 2 - (After completing level 3) - Drop down behind the wall with the red light to uncover an underground secret area with ammo, a weapon, and health. Watch out for guards the moment you touch the goodies.
