Complex sentence: This game put the gamer in a movie years before it became popular in the Resident Evil series, it also featured "stealth" gameplay and a first person shooter part that appeared in this game years before Doom (of course, without scenery animation).
Split into simpler sentences: This game put the gamer in a "movie" years before it became popular in the "Resident Evil" series. It also featured "stealth" gameplay and a first person shooter part that appeared in this game years before "Doom" (however, without scenery animation).