This is a guide from start to end if you're stuck, hopefully this guide will help. I'm leaving wide spaces between each new area so there's no accidental spoilers.






You get out of your cell and get to the bottom floor, go the the gate where it says "control room" you pickup the arm for the scanner to open the gate. In the first hall after the control room gate has opened there's a card on a chair, pick that up and open the gate above. To open the gate on the bottom floor to your right when looking from the control tower you need to use the computer in the control room.










You've opened this gate by using the computer in the control room. Now you head forward to the outside yard area, pick up the card from the dead guard, head back to the small room you see when you walk in that hallway. Use the card for the safe there, pick up the next card for the other hallway gate (the red door one)









Continue through the hallway until you get to the second prison area (cell block B) the guard room to the right contains a key in a little box on the wall for the door further ahead. If you go to the last prison cell to the right on the top floor you'll notice a hole in the wall, climb it and you get to a secret area.









You unlocked the door with the key, head forward to the canteen area, go to the kitchen and look for the small old tv. On it is a key for the gate on the left side when you first entered this new area.









You jump through the first hole, go through the second one as well, swim down the stairs, find the tool and then swim back. Use the tool on the pipe and then start the machine and then turn on the valve in the first hole area. Water is now gone, go down stairs, open the door and walk up the ladder.









First thing you need is the keycard for the security area ( the black door with the yellow handle with a small window above it) To get it you go to the closed big gate at the entrance, you break the glass above, jump through and go all the way to the big yellow door, on the floor you see the card. Pick it up and go back to the security door, open it and go to the second door from the right. There is two more keycards for the gate that leads to the garage ( you walked passed it in the hallway when climbing up the ladder)









After walking down the stairs and going through the short hallway you enter the garage. First thing you'll need is lockpicks. Only two places to find them: The light red box behind the ambulance van and in the electric water area. After getting lockpicks you unlock the police van (only one police van that requires lockpicking. Inside you'll find a keycard (for the garage gate further up, not difficult to miss) and a gas can. An orange light will appear showing you where to go to install the missing parts when you have them. Next open the garage gate, you find the battery to the left (behind the big blue security control box) and you find the key to the fedex van inside the security box (jump through the window that is open) Install the battery and open the fedex van, pick up the tire and install the back tire as well. The driver seat door will be unlocked and you can finish the map.