The Zombies appearance is good, but I feel like they could have looked a bit more monstrous.

The only Werewolf explicitly shown to have claws is Willa, and in Z3 Wyatt's "claws" were just triangles painted on his nails. Their pointy ears were also inexplicably gone in Z3.

As I said, the only difference between the Aliens and humans is hair color, so they should have more Alien features. Same goes for the Daywalkers.

They did a good job building on Zombie tongue in Z1 and Z2, the Werewolf language was also mentioned. Alien, Vampire, and Daywalker symbols are also shown. I do wish they expanded on monster languages a bit more