- opponents field of view is way to wide, some stalkers have 90 degree fov, others 180. I got a feeling there are even opponents with 270. It makes the game way to random, when some of enemies are completely blind while others are like a fucking radars.
180 degrees is pretty much human peripheral vision, 90 degrees is angle in which you can more or less see what you're looking at.
In any case you should be wary of approaching anyone from within their forward view hemisphere, or, as rule of thumb from wherever you can see that they have eyes.
I haven't made careful measurements of enemy FoVs, but I would assume that 90 is zone of awareness of derpy bandits, with faces hidden inside their derpy hoodies and no actual training, while veteran stalkers and military keep attention and generally notice stuff within up to 180 degree hemisphere. Am I correct?
If not, list exceptions.
I'm dismissing claims of 270 degree FoVs unless presented with actual examples.
- opponents range of view is unreasonably far. More so, there is no difference between day and night, sunny or cloudy day
Why should opponents's range of view be shorter than player's?
I haven't made detailed tests, but the enemies seem to have trouble spotting you at night from far away, unless you do something dumb, like shining your flashlight or firing unsuppressed firearm with brilliant, clearly visible muzzle flash.
I can attest, however, that the enemies certainly aren't constantly aware of your actual location and can have their line of sight broken by even partial concealment, which makes stealth pretty fun.
- opponents have superhuman ears, they turn hostile when they hear you even tho they can't see you, so they can't have a clue what was the source of a noise
Presumably not just a homeless guy.
Again no reason to make AI impaired compared to the player, if anything the AI should have an edge because the player is and will always be smarter.
AI will generally hear you firing even a suppressed weapon from pretty far away - it's not unrealistic. AI will have trouble pinpointing your location in this situation as long as conditions are right. If you don't want to be detected, try to avoid using weapon unless necessary. That's already better stealth than in most dedicated stealth games so far.
- Stalker engine has some awful limitations. Throwing bolts doesn't make a noise, so you cant mislead your enemies by throwing them at other direction
Haven't actually tested that.
- Opponents respawn in different places while quickloading, their favourite spots are behind your back
In SoC? I don't think so. There is AI reset bug on reload I've already addressed - get ZRP - but respawn has been toned down in patches and I have never had anyone spawn behind me after reload in SoC.