LOL. A Cerberus would actually be cool. The open world post apocalyptic zombie survival game is pretty popular for game devs. Heck, my first UE4 project was a open-world survival game featuring Frankenstein Monsters (Flesh Golems) instead of Zombies. The monsters were assembled from dismembered remains of human, animals, other monster which lead to the invention of the collage construction I’m now employing in current game product.
Realizing the massive competition, I aborted the project early. However, I think *Cerberus - *the wolf companion, is a feature that can make the game unique and it deserves some highlight. Maybe a simple command system: follow, fetch, guard, attack, etc could be implemented to give the player a means to control or influence (another resource to manage). Of course, Cerberus has to be fed and cared for to survive too, so as a digital pet, raising from a pup and evolving makes sense.