I've never been able to use WASD. I'm always getting lost and have to search out the buttons again. Not good in a fast paced game. So I'm strictly an arrow key user. With Shift,Control, and Enter for crouching, jumping, etc.
and of course the mouse.
"The way I see it, every life is a pile of good things and bad things. The good things don't always soften the bad things. But vice versa, the bad things don't necessarily spoil the good things or make them unimportant."