‘Bloodborne’ Gamescom Gameplay

The creator of Dark Souls is working on this PS4 exclusive that was revealed at E3 this year. While the combat still looks a little unpolished, the boss fight at the end looks phenomenal. The intricate environments are also nothing to complain about. If this game can deliver story and immersion the combat system may not be as big of a concern. Does this have what it takes to be PlayStations killer  app?