Alone in the Dark is set up like a movie. When you press the
button, you’ll have the ability to fast-forward or rewind through whatever episode you’re in. To get these achievements, you simply have to play through the episode without using the fast-forward feature to skip ahead to another segment. You can save in the middle of an episode, quit, and reload later without effecting the achievement as long as you don’t fast-forward.
If you get stuck at any point, you can consult the walkthrough found HERE