Fights are mostly just noisy clusterfucks at best, with the only real threat being off-screen attacks that can't be noticed because of shit audio, and movement still feels too limited to actually allow you to react to anything, so I'd always just end up running in circles. People made it seem like you'd be doing backflips over demons' heads or something, but it's actually a lot more banal than that.
Compared to what? How many other FPS can you name that have similarly fast combat and require you to use space in such a way to avoid getting killed? Most shooters nowadays just have you firing from cover half the time.