Ignis is torn between being curious and irritated when he doesn't hear the man's footsteps following him, but then he hears the sound of something--someone it must be--coming down in the ice in front of him. Irritation is pushed to the side and replaced full on with curiosity. How had the man done that? Can he warp like Noctis can or is it something else completely?

Questions for later, for sure. Considering the sound he made when he returned to the ice, he's probably built like Gladio or even heavier, which means the ice is even more dangerous for him than Ignis first suspected.

"If we can stay ahead of them, the ice should get thicker from here," Ignis motions in a forward direction, signaling that that's the way the man should continue heading be it by running or whatever other manner he chooses to cover the distance in.