Speedy but not so fun to play. There seems to be a mismatch between the use of the mouse and the keyboard, not helped by the fact the applet can't grab the mouse.
You can play it with the keyboard alone, but the current configuration makes that somewhat weird.
cursors=turn left, turn right, forward, backward
Also the controls don't feel nearly as good as Doom's. (And my memories are about as fresh as they can be - I recently played lots of Doom on my Wiz.)
It's more Wolf like, actually.