Playing with vertical mouse movement

Under vanilla conditions you're left with the option to play with vertical mouse movement on unless launching the game with Novert. The advantage of vertical movement is to smoothly push/pull the player, making precise movement easier. It's also an useful tool for baiting demons and revenants in tight situations and other monsters in melee combat. The downside is awkward turning, particularly with higher sensitivity and autorun. Walking on thin ledges can be a pain as you can accidentally move to wrong directions and fall. That's where keyboard controls come in handy. Disabled mouse movement gives more precise turning which helps in gun combat and circle-strafing. I prefer very slow vertical mouse movement but end up playing with the default speed on DOS anyways.