The difficulty of passing the special operations "Mars", "Sunrise" and "Pripyat" in the "Hard" mode has been reduced by reducing the health and armor indicators of opponents, as well as the damage they inflict.
A strange fact is that Oberon's SEDs clearly say that the real Oberon died 5 years ago in the White Shark, meaning he was alive on the 13th floor before being killed by Warface. Watch the video: https://youtu.be/_Zmi4sFBLDM?t=75
The transcript of the speech of the Oberon SEDs:
"You cannot kill someone who is already dead, the true Oberon White died in White Shark five years ago, since then he is us."