well ummm Last Of Us was a hell of a repetative game tho one of the bests if not the best game of the last generation
honestly i wouldnt mind to walk around trying to survive on a collapsing station with an Alien on my tail for the whole gametime, it only needs a pretty nice slow intro like the movie Alien had to get in touch with the characters with the world, how fascinating is to be in space etc. before you get the whole opposite feeling for the rest of the game, and oh as for the characters, i dont want too many as only 1 monster is in there but 2-3 well built up character(team mates, rescuing someone, any evil human character or a few who always try to screw you) is a must for a decent game