A click and point shooter game. You fire, constantly and hyperactively, in the opposite direction of your movement. This makes sense, because when you dodge away from a wee beastie who wants to catch you and chew on your giblets, you'll automatically be shooting at it. To strafe, just hold the mouse button to lock your firing direction. Easy, but it takes some adjustment if you're used to the old wasd-and-mouse setup. I prefer this, frankly. It feels clean and elegant, and it lets you carve your way through the hordes like buckshot through sherbet.