I Need To Find The Title Of This Game

Ok theres this game i played a few years back...it was pretty kickass where in the first level im this guy who is on a train killing vampires or something and in the end of the level i fight the Vampire boss and im like dead then i turn into like a vampire...throughout the game im simply killing and hunting vampires fyling witches wolves i think and some other ghostly monsters...its based on like the old times of the west...anyone minding to help me out? i really wanna buy the game but i dont know what its called 😐

Edit: i forgot to mention that some guns have like this blade attached to them if you run out of ammo

Sounds like darkwatch to me I think that's what it's called.

ah yes thank you ill be sure to get it again when i go to a game store