Sniper: Path of Vengeance (2002)

Sniper: Path of Vengeance is a first-person shooter game developed by Polish studio Mirage Interactive. Main story focuses on a deadly hitman only known as The Sniper. After successful assassination he was betrayed and he was apprehended by police. During breaking out of jail he found out of being injected with unknown poison. He has a few days to find an antidote. Since then the path of vengeance will be through the streets full of thugs, gangs, mob bosses and of course a lot of blood. There's also a little RPG element, which allows you to develop the protagonist's skills.