Despite the cookie-cutter characters and limited acting range of the whole cast (the Governator Arnold among them), this movie works very well. Three quarters of it is basically the alien predator hunting down the small band of mercenaries. That three quarters works very effectively and thanks to the fact that there weren't any over the top special effects and practically no computer imagery, the movie has aged very well. An action movie that doesn't embarrass itself despite the passage of twenty years, that's a rarity and this makes it a classic.
8/10