You can test the zombie pack by opening the level

HorrrorEngine/AddOns/ZombiePack/Scenes/ZombiePackSample

An additional scene showcasing all the available prefabs is located at

HorrrorEngine/AddOns/ZombiePack/Scenes/ZombiePackGallery

The zombie pack contains a bunch of pre-made Retro Horror Template zombie enemy prefab.

These prefabs can be found in HorrrorEngine/AddOns/ZombiePack/Zombie/Prefabs.

The prefabs are already fully functional and should immediately work when dragged and dropped into your HE scene.