Get Even

For this achievement, you will need to have collected every collectable (documents/audio tapes/scanned images) in the game for each chapter. You can check this from the hub (by looking at a binary photo). If you have 100% of the collectables in a level, a 4 digit number will appear at the bottom of the board. You will need to enter that 4 digit code into a keycode door in that level.

Do not write down the numbers as you can return to the hub from outside the door in each level. Something to note - you will need to look at the TV for the hidden memory in these rooms and you will also get a gun from each memory (no gun from Building B or Building C) when you access these doors which can be useful.

The locations of these keycode doors are as follows:

Grace's Kidnapping - as you progress forward from the start, you will have a guard in front of you who will then turn left. Kill him before he enters the door and enter the door yourself. Follow it along until you reach the keycode door

ADS Heist - At the beginning, go forward and then take the second right. Follow this along until you reach the door

The Victim - Once you identify the murdered suspect, continue forward and you can turn left or right. The game will encourage you to go right - instead go left and the door is here.

Jasper's Final Moments - in the warehouse, kill all of the guards (stealthily or not). In the top left corner of the biggest room will be the door (if looking straight through the warehouse from the point of entry into the warehouse)

Jasper & Rose - From the start, scan the door and go through. Immediately turn right and then right again. There is a path with glowing green at the bottom. Go down here and the door is here.

Meeting with Rose - Progress through all of the guard moments and you will need to enter the warehouse. You will need to enter a 3 digit code to enter. When you go through here, follow the path through the pipes and you will usually turn right at the end of the pipe path to proceed - instead turn left and the code door is here.

The offer - From the start, move forward and then move right towards the telephone tower. Follow it around this way for the safest route. Keep right continuously and you will get to a wall eventually and you will need to move left to proceed. If you move left slightly, you should see the code door. You will need to move even more left to go through a tunnel and proceed to the next part of the level.

Building B - You can only return here once you have completed the game. Towards the end of Building B, you will come to some stairs where you can go up or down. Go down the stairs the code door will be here.

Building C - You can only return here once you have completed the game. Towards the end of building C

you will be able to open a door on your right. The code door will be in here.

The achievement will unlock when you open the final code door.