Rating issues
The game features the use of variety of modern military weapons and their use against characters within the game is non realistic. Explosions will cause the character to be flung an exaggerated distance from the seat of the explosion and end with a rag doll effect fall to the ground. If a character is hit by bullets, it does not react accordingly and will continue to either fight or just very quickly move away and disappear from view.
Other issues
The game features online playing capability which may involve real-time interaction with other players.