There were only three outcomes for the zombies. The first was having their bones shattered, falling unconscious before being executed. The second was being executed by having their skulls crushed instantly. The last outcome was being beaten to death after countless strikes without triggering the effects of either shattered bones or crushed skulls.
Gale Combo was different from Staff Expertise previously, as it required no actual skill—just bash with a blunt weapon under the enhancement of the power. Seeing Shana taking on three zombies alone without falling behind, Lin Wu felt that such a "dumb" skill was better suited for "dumb" Na.