As I sit here struggling through my first play through of Bloodborne, unsurprsingly there is a group of hardcore speedrunners already dismantling the game.
I've hit around the 10-15 hour mark and have only just beaten the Witches of Hemwick. That is why it's a little disheartening to learn that one player has now beaten the game in 45 minutes. Youtube user Oginam_tv used a series of exploits, meaning he beat the game in about the time it took me to get to Central Yarnham.
You can check the speed run out here.
Thanks to VG247 for pointing it out.