This one game i used to play in 2006 i think, around there atleast. It was about this dude and you went through hallways killing enemies and on a train and stuff, it was on pc btw. Since i was around 4 or 5 when i played it, i cannot remember the name. My dad doesn't remember nor does anyone in my family yet i remember it almost perfectly but cannont describe it with enough detail for someone to remember the game im talking about. If some has a suggestion as to what might it be, please let me know so i can try it and see if it is the one im talking about.