You enter the Chalice Dungeon as a team, striving to destroy the monstrous denizens within, but eventually all partnerships come to an end. In Bloodborne: The Card Game, 3 to 5 Hunters work together to get through the Dungeon and collect Yharnam's blood before facing off against the horrible final boss. Hunters engage in battle with monsters, secretly selecting an action card to play simultaneously. Discussion is allowed, even encouraged, but you aren't bound by any promise you make.
As you advance deeper into the Dungeon, you will collect the blood of your fallen opponents. If the you can survive the final boss, the Hunter with the most trophies will be named the victor.