Oh god no !!
OP, I strongly suggest you don't see any bits of the gameplay/trailers/reviews/videos of the game and the movie I might add. Just buy the game, install, start playing and enjoy.
I recently played through the first one. Still awesome as ever
Amount of hard work and passion put into it by Remedy, who were a small studio/company at the time, is for everyone to see. If you look at the credits closely, each person has multiple responsibilities. No wonder it took them 5 years to finish and polish it.
Yeah, the movie not only gives away spoilers, it was also a genuinely horrible film. That was a waste of money.