I think what's going to make this game a good survival-horror is the fact that there's two people, it makes the whole atmosphere seem much more human; you're not some gun slinging lone wolf who will pistol whip the zombies/infected in to oblivion; you're probably going to have to look after one another, share ammo/supplies, probably be no health regeneration, probably med kit like RE/DS
i'm getting an Ethan from Heavy rain type of vibe from the father; a good down-to-earth man who will probably have to do some questionable things to other people so that he can provide for his daughter. the daughter seems to be mature for her age; she seems like the more logical out of the two, she seems like she's the scavenger type(probably can go through tight spaces) while her father seems like the overall power house.(wields better weapons/better melee fighter)
I'm assuming the wife/mother is dead/infected or possibly missing...