This unfairly-derided sequel in the Alien franchise is excellent IMO. People expecting and wanting Aliens 2 were always gonna be disappointed. Indeed, it is dark and downbeat but it has fantastic performances, stunning set-pieces and sequences, great FX (mostly) and score, with an awesome directorial debut from Fincher. Better seen in the 2003-released 'assembly cut' version, which restores a huge chunk of plot in the middle act.