Walker used one hand to hold on to the spear and prepare himself to throw it. He used the other to start to create the frost whip. He wanted to incorporate his magical spell that acted as a weapon and the basic weapons he used in to the same style so that he could become more fluid.
The elf with the wind strider system had just recovered from the end of the flame doll but already saw Walker coming. They managed to step in the air and jump over Walker's thrown spear which sadly plummeted to the ground as well. "That's another surprise for those training down below." Walker almost felt bad for losing three weapons down to the ground but decided that he shouldn't worry so much since he would always have other things to fall back on.