WMD - Intel 1
Grab this intel after you’ve swooshed from the Blackbird in space to the team on the ground for the second time. Breach the door, clear the room of enemies, and check the desk to your left, below the railing.
WMD - Intel 2
Shoot the hinges off the door and make your way up to the communication tower, kicking down another door to enter. Teammates will rappel through the windows and start taking out bad guys on the balcony. Run through the chaos until you reach a locker room in the back of the upper floor. The intel is on a bench.
WMD - Intel 3
The mission’s final intel is in the huge spacious warehouse filled with blue-and-yellow explosive barrels. Ignore the control room and head to the second table with barrels on top - the intel is with them.
Payback - Intel 1
Finish the game of roulette and begin chasing the Russian through the underground tunnels. Within a minute or two, you should reach a larger cavern with a waterfall and streaming sunlight. The intel is on a metal shelf agains the righthand wall.
Payback - Intel 2
Before boarding the Hind helicopter with Woods, check the table next to the green tent. The intel is next to the radio.
Payback - Intel 3
Free Reznov and race after him, into a large room with lots of rafter beams and LOTS of bad guys. Once the area is safe, look for the intel in the back left corner, a little left of the door that enemies kept popping through.
Rebirth - Intel 1
Exit the shipping container and stealth kill the first guard with an axe. The intel is immediately to your left here, on the ground in front of a crate. Don’t take too long, however, or you’ll be spotted by the helicopters.
Rebirth - Intel 2
Inside the laboratory of caged monkeys and pigs is an octagonal gas containment chamber that holds both the intel and a soldier. Here’s the tricky part. If you shoot at the soldier, the chamber’s doors will automatically close, blocking you from entering. So use your knife instead, or shoot him after you’ve acquired the intel. Don’t worry if you’re trapped and killed by Nova 6 gas - the mission will reload shortly before this point, with the intel already in your collection.
Rebirth - Intel 3
When you’re playing as Hudson in the hazmat suit, a building will explode into flames right in front of you. The mission path will take you into this building and up the stairs, but first, check the door on your right. Inside is a small dining room, and across from the stove and fridge, on a wall full of pots and pans, is the intel.