I don't know where to write this, so might as well write it here since I know you guys are interested in this game.
Played Bloodborne today, and beat the demo. It was the same demo that in gamescom, and it was nice to get my hands on the game.
In a nutshell, the game is the most atmospheric from software game I have played. It even beats tower of latria in atmosphere. Also, whoever said the game is easy isn't telling the truth, lol. You die in two hits if not careful vs heavy hitters in classic souls fashion. The maximum blood vials I got was 11, which is a normal number in any souls game if you attune/collect estus flasks. Managed to beat the boss on my third try, and he destroyed me instantly in the first two. What didn't help was the choppy frame rate and the input lag in the TV, nevertheless, it was really good.
Weapons don't do much damage vs bosses, but if you attack certain parts properly, you get to have a very damaging attack when the boss is down.
Also, guns are mainly used to stun enemies, and then damage enemies with a strong counter the same way you do so vs a boss. This is a pure melee game, even if the guns are there, so no worries there.
Overall, the game is souls, but faster. Really enjoyed what I tried, and is really worth getting a PS4 for this game.