Part 15

Enter the LOF (line of fire) of the MGT (Main Gun Turret) in Pswy#3 (passageway 3). Toss one grenade high and one low, then backtrack around the corner and switch to the SG (shotgun).

Listen for MGT tilt and screams. If both are heard, you eliminate the MGT and at least one OBG (Outer Body Guard). Hold sites to the far end of Pswy#1. If you have a survivor, the EP (entrance point) to Pswy#3 is the EP to expect it from.

If no scream is heard, expect an OBG from Pswys#2 and 3. RT/SG (rapid-fire/shotgun) both as they appear.

If you heard no MGT tilt, you can send an ET (energy tool) to it or GGP-/+ (grenade/gravity gun plus/minus) it to the far end of Pswy#3.

If you have a spare ET, GGP- it into the wide area of Pswy#3. Locate and absorb the MK (medical kit) then GGP- a slender Oxy tank.

Remain at the middle line of Pswy#3, then sidestep right into the plane of Pswy#4. From this position, the MGT at the far end will not see you, allowing you to pick it off at your leisure.

GGP- the ET then BH (backtrack/hold) to the end of Pswy#3. Stay left along the wall and stop behind and against the crate.

Wait until you see both OBGs lined up to send the ET. QS (quick switch) to SG in case one BG slips by, then RT/SG him.

Backtrack to the intersection of Pswys#3 and 4. Ensure the SG magazine is full, then sprint the length of Pswy#4.

As you approach the prior position of the MGT, look for an EP to Pswy#5 at your 11:00. There's an EB (energy bolt) just inside.

Pass through the flood room EP and slow to a run toward the Pswy#5 EP. An OBG appears in the EP as you descend the ramp into the water. Wait for him to turn and face you to RT/SG the EB.

Strafe left to the wall left of the EP and RT/SG anyone that passes through the opening. After a moment of no OBGs, switch to the PR (pistol) then sidestep right into the plane of the EP for LOF (line of fire) on the ramp and divider fence.

Look for and retire any survivors. If none, pull the pistol and send 3 rapid-fire rounds into the EB at the top of the ramp.

Scour the flooded room for and absorb the supplies. Return to the EP to Pswy#5, switch to SG, then sprint up the ramp. Without stopping, RT/SG the OBG that enters from the ramp top.

Continue sprinting into the Pswy and right to the EP to the caged enclosure. An H (Hunter) will appear and begin shooting. Keep sprinting through the 2 rooms and across the bisecting Pswy.

Make a hard left into the small narrow room, then sprint up the stairs. Turn around, then run/jump over the fence and into the water. Switch to the CB (custom weapon) after splash down; it may be a slow reload but it's a 1-shot kill and drops enemies through multiple Wkwys (walkways), which makes up for the load time lag.

Anomaly Note (10/5/16): You may be pulled to the surface when swimming out of the tunnel to the flooded silo. If you don't resist, you'll end up under the Wkwy taking fire from 4 to 5 OBGs. One BG may be on WKwy#1 sprinting around looking for you.

Swim up and gain footing on Wkwy level#1. Move to the 6 (rear) of a wide column for cover (press the cover button to crouch behind walls or objects), then back up to the silo perimeter wall for cover from upper-level BGs.

If BG#1 is on Wkwy#1, locate and hole him ASAP. Locate ladder#1. If you see and hear gunfire, scope the CB, locate and retire any enemies if possible.

Sprint to ladder#1 and climb it to level#2. Move right to the column's 6, then crouch. Back up to the perimeter wall and side-creep left one step. This provides cover from the right while you retire the closest BGs 1 to 2 levels above.

When clear, sprint to ladder#2, climb to level#3 and go left. A BG is almost always on the Wkwy between you and ladder#3.

Climb to level#4 and retire the (usually) last BG in the tower. You should have 3-4 bolts left.

Continue across the manmade bridge to the stairs. Look under them for SCs (small caches).

Switch to SG in case a slowpoke surprises you on the stairs, then continue up to the silo CR (control room) level. At least 2 MHs (Mutant Hounds) fly in; introduce them to the concrete.

Sprint to your right across the silo to cover. Duck and move through the shelving. Be ready for 1-2 MHs while moving through the shelving.

Note: Enemies may toss Gs (grenades) while you move through the shelving. Prepare to back off the shelf and crouch or GGP-/+ it away.

GGP-/+ the SC into the EP of the room across from the shelving. Drop off the shelving and run into this side of the CR, which has been blocked off. The EP to the 2nd half of the CR is partially open but jammed.

Switch to Gs, orient, and throw one high into the other half of the room, then ASAP QS to GG (gravity gun) and hold GGP-. Enemies will toss it back through the door. GGP+ it back ASAP before they close the door.

Exit the CR, move left to the slanted wall. Position yourself to maintain cover from the MGT but can toss Gs through the glass shield they wrecked to place the MGT.

Send 1 G, then sprint around the slanted wall to the right side of the broken glass shield as the G explodes.

Crouch beside the CR window and look through the blast shield slats for BGs. Every time you remove one from the MGT, another will attempt to take his place.

Move close to the broken glass and stand. Allow the OBG to swing the MGT and floodlight away to sidestep in and RT/SG him.

When clear, crouch and enter the CR. Health up, then return to the MGT and silo cover switch. Crouch, flip the switch.