Half-Life: Vampire Slayer - Chapter V

Description
Vampire Slayer is a multiplayer, team-play modification for Half-Life.

You play as either a Vampire, or a Slayer, in rounds where the objective is to wipe out the opposition. The Vampires use speed, stealth, and the ability to jump very high to attack or evade the human slayers.
Slayers have normal jump and run abilities, but also carry deadly weapons which can be used to take out the vampires from a distance. In order to kill a vampire, it will have to be staked by hand or with the stake launching crossbow.

This mod also comes with bots included for single player games.