Painkiller PC Game

There are five weapons to use in Painkiller, each weapon has both a
primary and secondary fire mode. Many of these weapons such as the
shotgun, chaingun, grenade launcher, rocket launcher you will instantly
recognize as standard FPS fare. While these are fully functional with
one or two exceptions, most seem rather uninspired. That's really too
bad, too. Since most of the focus of this game is killing as many
enemies as you can, it would have been nice to have some more
interesting ways to dispatch them.