PSD file with hq zombies, 40 unity native
animations exported separately, 4 Spine2D exported animations with 10 skins each, 4 Spine2D files if you will want to edit animations. Package also contains tiling background, track and forest paralaxes!
Baby zombie texture size - 512x512
Normal, Grunt, Big Boi Zombie textures size 1024x1024
Despite Unity Native animations is provided, I highly recommend using spine unity package for full experience.