Most players are conditioned to this mechanic. But, not all Undead are Zombies. Some are reanimated by Spiritual Energy so headshots don’t kill them. Mask and Helmet sounds awesome as those can be destructible too. Instant Kill Headshot could be a Limited-time Powerup.
If Nanite SK is mangling the Gore System, then don’t use it. May have to stick with traditional Level of Detail (LOD) and other mesh swapping techniques. Another possibility may be using Vertex Animation with Static Mesh technique. Perhaps Nanite can work with this technique without fuss.
