Old Town
At the end of the mission, look to the right and go to the omen symbol. The COG Tag is on the ground in front of a dumpster.

Riverwalk District
There is a big courtyard with various platforms surrounding it. Cross the courtyard and seek out the alleyway on the opposite side. When you spot the Omen symbol in the alleyway, look to the right for the COG Tag.

Museum Gardens
Break through the door at the beginning of the level and look for another alleyway just up a small flight of stairs. You'll spot the Omen symbol next to the stairs. Keep heading down the alleyway for the COG Tag.

Great Hall
Just after successfully defending the plaza area, walk around the circular fountain with the statue at its center and find the COG Tag laying at its base.

Kashkur Wing
You will know you're close when having to walk down a long hallway. Keep an eye toward the bottom of the wall here and when you spot the Omen symbol, hang a left and find the COG Tag on the ground not far from the symbol.

East Wing
In this wave defense area, the Omen symbol is on the right side of the large room. Go to it and then head turn around and spot a short hallway. The COG Tag is in this hallway.

Archives
There is a room here that matches the chapter's description, full of shelves and racks of archival material. Go the opposite end of the room, turn left and follow the Omen symbol to the COG Tag.

Vaults
Near the end of the level and past the sinkhole, look for the Omen Symbol on a big concrete wall. The COG Tag can be found by following the same wall to the right.

Enfield Bridge
This one is tricker because there's no Omen symbol. Instead, be sure to look around the base of all the pillars while on the middle of the big bridge.

Courtyard
You will stumble into a room that looks like an old office, complete with flipped over desk. The COG Tag is on the ground right in front of that desk.

R&D Labs
When you first spot the Omen symbol in the level's biggest room, you still have a little ways to go. Take a right at the Omen symbol and enter the room with computers. Then head toward the furthest part of that room from the Omen symbol to find the COG Tag.

Monroe Commons
The symbol itself is along the main path on the wall between two windows. But the COG Tag is located in a room much further down on the left, tucked behind a big utility table.

Atrium
In this level's main hallway, go in the doom on the right and find the COG Tag to the right side of the lockers in that room.

Crashsite
Between defending your post against waves, turn around and go backward and as far right as possible to find the COG Tag.

Amador Park
The COG Tag is obvious at the bottom of a set of stairs you spot at the level's end. Instead of going up these stairs, look around the top of the stairs you just came up to find the COG Tag behind a half wall.

Magadha Villa
At the end of the level, go left where your team waits to move forward and find the Omen Symbol. The COG Tag is just behind a big metal pole up against a wall.

Soleno Villa
For the third time as the level ends, you will face a tunnel blocked by a wall and a car. The Omen symbol is easily spotted on the left, and the COG Tag on the opposite right side of the symbol between two cars parked against one another.

Windward Way
There's an obvious container you pass through and you'll see the Omen symbol inside. Look on the ground opposite the symbol to spot the COG Tag.

Risea Estate
At the chapter's end, spot the garage and find the COG Tag near some tires in the corner.

Guest Bungalows
Once you enter the mansion, look around the lower level before heading to the top for a side room. The Omen Symbol is on a table, and the COG Tag right on the table below a severely crooked mirror.

Elliott's Mansion
You have finally found your objection for this mission and must defend the beacon while it works. There's a big outer room with two levels. The Omen symbol is on the lower level on the left side near a pillar. The COG Tag is literally directly above it on the upper level. Might as well go right for the COG Tag and skip the symbol.

Elliott's Fortress
As your team waits to wrap the chapter at a door, take a right at them and go past the Omen symbol until you see the COG Tag where the space to walk ends.

Container Terminal
Look around the right side of the area after your wrap the chapter. The Omen symbol is on a large crate on the right side. Find the nearby stairs and follow them right to the COG Tag.

Motor Pool
After entering through the door you activate and into the main room, head left and look for the Omen symbol on the wall, then head around the wall to find the COG Tag in a little niche.

The Cliffs
Start the level and head up the small flight of stairs onto the platform on the left. The COG Tag is right there in the back left corner..

Central Base
Stay on the right side of this relatively small area and find the entrance to a lower area. Once down there, look left and find the COG Tag.

Central Control
Take an immediate right when the mission starts and find the COG Tag to the left of some giant barrels.

Central Beach
Be sure to grab this one before heading to the beach and the big defensive stance. Find the Omen symbol right away, then turn around while standing in front of it and walk till you see the COG Tag in the corner.

Wharf District
As the mission begins, head up the stairs and through the door you must kick. Take a left and see the Omen symbol, and the COG Tag to the left of that.

Parade Grounds
Almost identical as the last one, only go up the stairs near the Omen symbol and then take an immediate right to grab the COG Tag.

Upper State Street
Take out the Locust in the ambush, then you will easily see the Omen symbol. Look around and behind where the symbol is for the COG Tag.

State Street Rooftops
You are near after navigating the rooftops to where you spot a large hole in the roof. Look ahead for a ramp going up and follow the ramp right to the COG Tag.


First Avenue Rooftops
Take an immediate left as the mission starts, spot the Omen symbol, then look on the right from the symbol for the COG Tag.

Museum Square Rooftops
Toward the end of this mission you set up a defense, look below the raised platform and follow the walls around to the left until you spot both the Omen symbol and the COG Tag.

Overlook
You have to be quick on this one. The Locust bust through doors and attack. When the first wave is toast and before the second wave, run into where they came out of and grab the COG Tag. Failing to do so then will result in the mission automatically ending when the next wave is killed off and you will miss your chance.

Grand Courtroom
The room is big, but if you take an immediate left and head up the second set of stairs to the raised platform.

Halls of Judgment
In the room just past where the Declassified Mission Omen symbol is, head along the left wall and find the COG Tag sitting out on a balcony along this wall.

Terrace
Head down the spiral stairs and through the next outdoors area. Just before the end, look on the right for the COG Tag.

North Entrance
When the mission starts, look directly ahead and find the Omen symbol on a balcony. Head over there, then continue up to find the COG Tag on the next level near a turret.

Main Entrance
Kick open the door, head down the stairs and into the immediate room on the right. The COG Tag is in the corner of this room.

Great Staircase
As the mission ends, skip boarding the Raven immediately and find stairs behind it that lead to the COG Tag.

Plaza for the Tyran Dead
Run along the outer wall and look for the Omen symbol. When you spot it, the COG Tag is right next to it.

Reunion
When you exit the shopping center, head down and look for the COG Tag behind a pillar.

Anybody Home?
Hang an immediate left when the mission starts and go into the garage. The Omen symbol is dead ahead, and the COG Tag next to some dead bodies.

Dead End
You are asked to kick a door after getting to remove the gas masks. Instead, hang a left and kick open the next door. In this room take a right and find the COG Tag in the corner.

One Step Closer
In one of the buildings you must get through, you will easily see the Omen symbol. When you do, look around for stairs and head down to find the COG Tag near some washing machines.

Straight to the Top
After dropping through a big hole in the floor, pass the staircase that continues the mission and go straight into the room ahead. Find the COG Tag through this room and in the next area near a desk.

A Few Complaints
When asked to secure the kitchen and you kick in the door, go left and into the first room you see. The COG Tag is in this room right by the corpse on the ground.

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