Price 100$ on Unity Asset Store: https://assetstore.unity.com/packages/3d/characters/humanoids/living-dead-pack-7613
But now you can download LIVING DEAD PACK FREE.
LIVING DEAD PACK
This pack currently includes 5 living dead characters. These characters are ready to attack your player characters and defeat them, ideal to start any of your fantasy projects. Models come with diffuse, specular, normal textures and a lot of quality animations.
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