The Ridires and Frelsi present on that floor stopped to fight each other long ago. They didn't feel like fighting with such a spectacular show happening some few kilometers away from them.
The ones who were closer to the combat needed to rush through the city to protect themselves. However, once the power of those two strong warriors started to escalate exponentially, nowhere in that city was safe at all.
Their speed couldn't be followed by the eyes of anyone there. The shockwaves that each clash caused couldn't be absorbed easily, and most of the Ridires and Frelsi were knocked away or sent flying.
Some of them died in the middle of that battle in different manners already.
There were not too many casualties like that since Ivar was trying to avoid fighting near his comrades not to kill someone by chance, although the Vanir didn't seem to care too much because of his mad assault.