Here is a map of the entire subway to make navigation easier for you. A mark on a station indicates that you can find a polaroid there.

You need to find all polaroids in one playthrough. If you close the game (even without actually finishing it), the count for the achievement will stop.

To deal with that you need to go to \HKEY_CURRENT_USER\SOFTWARE\Trainslation\Trainslation and delete everything in this folder. After that you will be able to complete the achievement, but you will need to find all the polaroids again.

In order to find the folder, type "regedit" in windows search bar. Open Registry Editor. Use the left panel to find the folder. You can also simply copy and paste the path to the bar at the top.

Two of the polaroids can be found on any train.

To find the first one go to the beginning of the train without entering.



To find the second one get inside the train and go all the way to the back of it.

Position yourself facing towards a train that goes to ПРЕЗРЯЛО.



Turn around. On the left side you will see a green bench and a vending machine a bit further. Approach the vending machine. The polaroid is behind it, on the side of the box that is attached to the wall.

Position yourself facing towards a train that goes to БАСЕЙН (if you are on the red line) or ПРЯСНО (if you are on the green line).



Now turn right and go up the stairs. In the middle of the hallway there are two vending machines standing near each other. The polaroid is between them.

Position yourself facing towards a train.

If you came from СВЕТУЛКА staion, turn right and go to a fallen trash can.
If you came from ВОДОРАСЛИ station turn left and use the stairs to go above the rails. Go down the stairs, there should be a fallen trash can on the left.

Jump over a trash can (you can use the bench to jump on it). The polaroid is on the side of the stairs.

Position yourself facing towards a train that goes to ШЛИФЕР.



Turn left and go forward. The polaroid is on the light on the wall of the tunnel.

Position yourself facing towards a train that goes to РЕКОЛТА (if you are on the yellow line) or ПОЛЮС (if you are on the blue line).



Now turn left and go up the stairs. On the right (you will have go through the entire hallway if you came from the blue line) there will be a yellow poster. The polaroid is on the other side of it.

Position yourself facing towards a train that goes to РАЗЛАГАНЕ.



Turn right and go all the way to the closed exit. On the left there is a vending machine with a trash can near it. Polaroid is located incide of the trash can.

Position yourself facing towards a train that goes to РЕКОЛТА.



On the left there is a phone. Polaroid is behind it, attached to the back side.

This achievement can be done at any station with the stairs that allow you to go above the rails. I did it at the ЛАЛЕ station, because that was the first station in my playthrough.

If you begin at the station with no stairs, you can do the achievement at the БАСЕЙН station, because there is also a polaroid nearby, so you will probably be going there anyway.

if you have already been at БАСЕЙН and don't want to go all the way back, here is a list of the stations, that have the stairs.

• Green line: ЛАЛЕ, ЛИВАДА.
  
• Red line: СЯНКА, СЛЪНЦЕ, БАСЕЙН.
  
• Blue line: ШЕЙНА, ПОЛЮС, КАМИНА.
  
• Yellow line: ЖИТО, ШУМА.

At the beginning of the stairs there is a bench with a fallen trash can nearby. You can find them on both platforms. Jump on the can and position yourself facing towards the stairs.



At some stations with the stairs there is no fallen trash can. Instead there is a vending machine, a trash can and some metal bars behind them. (You can also find them on both platforms, but for some reason I was able to do the jump on only one of them. If you can't make a jump, try going to the other platform.) You need to go to the metal bars, jump on them and then jump on the trash can.



Now you need to jump on the handrail. It took me a few tries to do it.



Walk on the handrails until you are right above one of the rails.



Wait for a train to pass underneath and jump on its roof. (When I did this achievement, I jumped on the train that was going towards the stairs and almost instantly fell down from the roof because of it. Despite that, I still got the achievement.)

Thank you for reading my guide. I hope it was helpful!