The vid I saw seemed to show casual, easy, hard, nightmare and 'hammer' modes. I didn't see 'normal' - maybe I watched it too fast or missed it. My only concern is that I get to change..... nothing.

I personally don't give a sh*t how others play. To each his own. I play solo so I just follow the rules I set down for myself. You do you.

Looks like most people are definitely 'pro'.