Just started playing

As huge Alien fan since the first film, needles to say I love this game. The aesthetics, sound and atmosphere are great, very much like the films. I like that they used parts of the original score too.
I am finding it very hard though! I guess I am a bit rustie regarding this kind of games, but I often miss objects and need to back track or end up having to take a quick look at some walkthrough lol.