Pros: The game isn't as bad as most people say it is. Perhaps it is on the console version bad the pc. edition benefited from some pretty hefty updates and patches. As its stands its worth it at an under $20 price point. It will never be what is was meant to be but serious fan will find just enough to like.
Cons: The graphics and game play feel several years out of date. Enemy A.I. has been improved but is still not on par with the level of quality that is expected in modern AAA games. Same goes for graphics.
Summary: The single player story is not that impressive, and has a "need to know" vibe that goes with the rank of the character. Your a grunt and no one tells you anything. Not bad but not Sci Fi where things are explained.
Pros: To fully appreciate the PC game it must be purchased for under $30.
Cons: Difficulty is still odd, with soldier and hardened being almost the same.
Cons: This is not the game they showed at E3. The demo you watched so many times hoping to see aliens and creepy environments...NOT THERE. Poor story line, poor graphics(not even close to what was demo'd) Just a rip off.
Summary: So upon first impressions, this game is ok. So far the single player is ok. A bit of a strech storyline wise but fine. I had very high hopes for multiplayer to be a pseudo Left 4 Dead Aliens style. Massive hordes of aliens, 4 marines start here end there and you just have to survive. It even seems like it would have been perfect L4D clone...4 classes of aliens: normal = zombie, lurker = jockey, spitter and tank. is it too much to ask for them to redo multiplayer?