In one word... terrible.
The break down:
The daughter; who's hair (always clean) makeup (always on) attitude (always that of a 16 yo.
The son; a junkie who seems to still want to be a junkie in an apocalyptic world. His junkie methods seem to be the way to guide and save them all and yet at the same time take them down. (Aka discovery of using zombie blood)
The father; the one good actor who died...
His son; an sjw... you would be happy to think his character was killed, but it was never shown.
The mother; I'm torn between her character as I cheer at times and wish she would beat her miserable kids.
This is already TL; DR status, so time to end it.
Watch it and decide for yourself. Just remember one thing when you disguise yourself with zombie blood to blend in make sure you dont dab one drop on your head. But hey, this works on this show.