Every part of this game is enormously insulting to the player's intelligence. New enemies are spawned literally behind your back, buildings and rooms locked until you're told to go inside, then they miraculously unlock, plot is full of little gems like 1989's Czech soldiers speaking russian and using US military hardware, whole levels are wasted on things like walking two empty rooms across and entering an elevator, breaking stealth in mandatory stealth sections means instant game over but the game considers very weird things to be stealth breaking (running around soldiers and loudly breaking crates isn't, instakilling a soldier with a knife but not a thrown knife alerts everyone on map no matter where it happened). Hitboxes and hitdection sometimes work, sometimes do not work at all, expect all trees to be way wider than their 3D models suggest - for you, enemies can shoot through anything if they want to. There's also possibly the worst escort mission in history, where player is irrevocably instakilled should he stray too far ("too far" might be other side of a river, might be around a building's corner).