true to aliens, great fun to play highly recommend
graphics - good but not the best some poor lod on textures,animations are smooth and the characters actions are true to what they are doing ie in co-op if you have to hack a door lock the other players can see every step form unhooking the equipment from your belt to actually hacking the door not many games do that.
sound - perfect true to the movies, dialog is again good not over done and definitely no poor voice acting
game play
single player - what you expect from any first person shooter lots of running and gunning has some pretty cool close ups of insta kills on aliens like shoving your pistol in its mouth and blowing its head off soo fun. the co-op is really fun too doesn't add any thing to the story but its good having your friends watching your back rather that bots for a change. There's also lots of hidden gems in the levels that get you unique weapons or upgrades for you existing arsenal.
verses game mods - cant say haven't really played that yet (sorry)
story - makes sense has a good flow but all in all its ok could have been better but have played worse in most modern shooters so.....
To sum up good all round shooter has its bad and good moments I would definitely recommend giving it a chance I think you could be pleasantly surprised by this game.