Sniper: Ghost Warrior 2

Secrets in act 2 are film reels. There are 4 in each mission, which totals 12 secrets altogether in act 2. For a text description of where each film reel is, please see below. I have also provided a video which shows the locations of all secrets in act 2.

To see how many secrets you've collected in act 2, choose extras from the main menu, choose secrets, then choose act 2. You'll be given a list of missions in that act, and when you click on a mission it will tell you how many you have. If a mission is greyed out, then you have not collected any collectibles from that mission yet.

Operation Archangel

Secret #1 - At the very beginning of the level, after killing the 2 enemies by the tank, follow Maddox into a house where he stabs an enemy from behind. The secret will be on the table in the next room.

Secret #2 - You will come across a train station where you need to stealthily kill 2 enemies before proceeding. After you've killed them, keep going forward until you see a bench on the left of a wall with the secret on top of it.

Secret #3 - You will come across a field with 3 AA guns you need to blow up with C4. After the second AA gun and before the third, will be a bus with a door resting on the driver seat (like the door got blown off and landed there). The secret is on the floor by the driver seat.

Secret #4 - After you've blown up the AA guns, follow Maddox underground. He will tell you to follow him, as enemies are coming, so instead pick up the secret on the table in front and to the left of you.

And Justice For All

Secret #1 - After you follow Maddox and Merinov into the house, you will kill a couple of enemies, and you will go upstairs. Once upstairs, your team will go to the right, so you need to go left and then forward to pick up the secret at the back of the room by an open locker.

Secret #2 - After Merinov starts getting harassed by some soldiers, save his life and go right into an empty store. The secret will be on a shelf in front of you.

Secret #3 - After going through a garage where you need your night vision goggles, you will enter a street with a large crater in it. Go past the crater, and you will see a dumpster with a fence. The secret is in front of the dumpster.

Secret #4 - At the very end of the level, Merinov decides to leave and it's just you and Maddox. Instead of getting ready to snipe, go to the right where there is a medkit. Next to the medkit is the secret.

Ghosts of Sarajevo

Secret #1 - At the very beginning of the level, you will open a door that triggers a cutscene. After the cutscene, keep going forward with the level until you find your rifle. To the left of the rifle is a coffee table with the secret on it.

Secret #2 - Once you enter the library, 2 civilians will be killed by a sniper in front of you. Kill the sniper, and the secret will be on a table to the right.

Secret #3 - After you clear out a park, you'll have to enter a bombed out building. The secret is next to a medkit on a table on the second floor.

Secret #4 - From the last secret, keep proceeding to your objective until you get inside the hotel. Go up the stairs, but go to the left instead of the right. The secret will be on a table.