There is some other annoying things: jump is useless, it will make player much slower at game doesn't even exploit it much. But if you are used to play modern fps, don't expect fun and easy moments, but quick loading and saving every other second. Later part of the game will really ruin your day, but the difficulty level was pretty normal for it's time.

Enemies see your movements through walls and sometimes they will start even shooting at you before you are at drawing distance. But if you are used to play modern fps, don't expect fun and easy moments, but At first, it start as a casual fps, but further you go, worse it will go. At first, it start as a casual fps, but further you go, worse it will go.