Doom Eternal - Doom Hunter Base (No Damage, Nightmare)

First arena in this level is pain in the butt, it took me about 20 minutes to get successful attempt, also screwed up several times at place which never game me any trouble before, all because floor traps, hate them. And the boos fight, i could've done it flawlessly but i wasn't really in the mood to do so, because i need to keep in mind a lot of things to do a flawless fight, i will do so in the final 1 segmented run of the game.
I didn't choose the "Ultra Nightmare" difficulty, because it is nearly impossible to complete the whole game with No Damage Taken without using any checkpoints for multiple attempts. I cut all the failed attempt if there were more than one so that viewers won't be watching me failing same encounter several times.
In later levels 90% of failure is caused by random fodder demon projectiles, especially such fodder demons as soldiers and mecha-zombies, they are the most dangerous and sometimes even are number one priority to kill because of their random spread to some their attacks which makes it impossible to dodge resulting taking damage and loading checkpoint for new attempt.
Doom Eternal AI is dynamic and enemies can almost always surprise you even if you know where each one is located.