Jesus someone was complaining about the rubbish AI and being seen in sewers while no line of sight to anyone, its a complete joke.
If I decloak and no one can see me, I'm in a sewer or hidden anywhere theres as much chance they'll shout out "he's decloaked/cloaked" and magically know my location. Not that it matters, its so painfully easy most of the time they can't seem to badly damage you. This is why I hate auto-regen health, makes everything so easy.
Been in a sewer got in cloaked, no one near the entrance, all the guys at the other end shouted out and threw a nade down, it was round a corner and a good distance away, the AI is beyond retarded and seems to clearly be based on your actions. IE you cloak and the engine tells the enemies to respond, its got nothing to do with AI seeing you do something, but your actions triggering either directly, or maybe having a chance to trigger a certain enemy response.
Gah, it is hard to play a game you think will be bad, you're not quite in the mood to enjoy it, if in a better mood you might overlook some of the bad stuff in the game. Though I have a feeling no matter what mood I started playing the game in, the epically rubbish and impossible AI stuff would have wound me up.
Unfortunately the game has got SO many incredibly basic things completely wrong, like the AI, it wants to give you the option to stealth an area, yet, stealth is broken in that sense. I can walk through almost any area cloaked with a silly amount of energy "stealthed", but the stealth option of dropping into a sewer where they can't possibly see me, utterly fails?