Rise of Nightmares

taken from x360a forums
-> credit goes to: Snitty 1 / Dusturm and all other's who've added information.

reposting and adding my own findings:

-> it doesn't have to be in one playthrough
-> the order in which you find them doesn't matter
-> difficulty doesn't matter (you can get 5 in "human"-difficulty and the remaing ones in "no mercy") it will still unlock once you've gotten the last one.

ACT 1 - The Train
-> After washing your face and reading the note from Kate move along the first train carridge until you see an open conpartment on the left. You should comment on the female student traveling alone.
-> At the end of the carridge go through the first door and look through one of the the windows on the right. You should comment on the weather.
->At the end of the second carridge go through the first door. When you try and open the second door the train will jolt and a woman (Jane) will bump into you. When she's finished talking look at her from behind. You should comment on her curves.
->Move along the third carridge until you see an open conpartment on your left containing 2 soldiers. they comment on you being an American.

ACT 2 - The Survivors
-> After the cut scene you will start in the wrecked train. Duck under the wreckage infront of you and look to your left. You should see the ticket collector get swept away by the river.
-> After the next cut scene you will start off in a cave. Turn around to look at the man sat on the floor behind you

ACT 3 - House of Madness
-> When you see the man get electrocuted take the key from his neck and unlock the door. Turn right and look through the bars on your left. You should see a man get squashed by spikes.
-> Pass through the bedroom into what appears to be a dressing room. Infront of you is a rack of clothes/dresses. Move closer to the to see the look icon. You should comment on the ugly dresses.

ACT4 - Friend or Foe
-> Head across the courtyard/garden to the far right corner. Move close to the well for your next look opportunity.
-> Follow the man/dog to his lab where there will be a short dialog. After he has finished speaking you can look at him and he will say something about his heart not being on ice.

ACT 5 - The Forest
No "Look" events there.

ACT 6 - The Nightmare
-> Head round the corner to the well you looked in earlier and look in for a second time. - this time a "Ernst".

ACT 7 - Viktor
No "Look" events there.

ACT 8 - Stirrings Of Death
-> After the cut scene, make your way across the floating platforms until you reach the woman in a red dress(Mary) and a baby crying in a cot. Look at the baby before interacting with Mary.