I don't know really mate. I'm not sure the art style matches the ambience! Perhaps it's a little Nintendoesque and I don't get it, never having owned a Nintendo console.
Not sure of the "Headshot" bubbles coming up on the screen either. The close up of the zombie looked horrible enough to be too scary for kids, but the player character set looks like it's aimed at them. Have to wait and see some proper gameplay, I might be doing it an injustice.