Check out these video guides to get any help that you need to complete this interesting puzzle game. There are no cheats for the game, so you'll have to use your brain to get yourself though the puzzles in the game. BUt if you are stuck, you can check out the videos below for some help.
Here are the timestamps for the above video so you can get to exactly where you want to be.
0:00:25 - Chapter 1
0:20:05 - Chapter 2
0:23:20 - Mrs.Skye achievement (Talk to Mrs Skye)
0:24:00 - Chapter 2
0:50:51 - No Guns achievement (Try to use a gun to face the Masked Killer)
0:53:26 - Chapter 3
1:35:50 - Chapter 4
1:37:20 - Inform,Report achievement (Talk to Sonny)
1:37:45 - Chapter 4
Here are the timestamps for the above video so you can get to exactly where you want to be.
0:00:00 - Chapter 5
0:49:17 - Chapter 6
1:01:04 - Chapter 7
2:44:40 - Ending