The Cleric Beast boss fight takes place in the "Central Yharnam" area (on the big bridge).
All Bloodborne Boss Fights Playlist: http://www.youtube.com/play...
My character level for this fight: 13
My weapon for this fight: Hunter Axe (one-hand version, no upgrades)
Cleric Beast is the first boss in the game. The basic strategy for this fight is to attack him from behind at all times. He is very slow and will rarely hit you when you are behind him. Should he hit you, keep in mind that counter-attacking him with some quick strikes will replenish your health. So instead of using up your health potions perform some counter attacks right away and you will get your health back + deal some damage at the same time. Don't waste too much stamina by dodging attacks. It doesn't matter if you get hit, as long as you have enough stamina left to perform a bunch of quick counter attacks. Despite being on a very low level I didn't have to use any health potions in this fight, simply because I performed enough counter attacks.
If you are really having trouble with this boss you can also throw Oil Urns and Molotov Cocktails at him. The Oil Urns will drastically increase the damage dealt by the Molotovs. This will take away a lot of his health and give you a good start for this fight.
All Bloodborne Trophies:
All trophies acquired. Hats off!
You lived through the hunt, and saw another day.
Captivated by the moon presence, you pledge to watch over the hunter's dream.
You became an infant Great One, lifting humanity into its next childhood.
Yharnam, Pthumerian Queen
Defeat Yharnam, Blood Queen of the Old Labyrinth.
Acquire all hunter weapons.
Acquire all special hunter tools.
Acquire a weapon of the highest level.
Blood Gem Master
Acquire an extremely precious blood gem.
Acquire an extremely precious Caryll Rune.
Gain entry to Cainhurst, the lost and ruined castle.
Gain entry to the realm of the Choir, the high stratum of the Healing Church.
The Source of the Dream
Discover the abandoned old workshop, the source of the hunter's dream.
Nightmare Lecture Building
Gain entry into the Byrgenwerth lecture building, that drifts within the realm of nightmare.
Defeat the beast that once was Father Gascoigne.
Defeat the beast that once was Vicar Amelia.
Shadow of Yharnam
Defeat the Shadow of Yharnam.
Rom, the Vacuous Spider
Defeat Great One: Rom, the Vacuous Spider.
The One Reborn
Defeat the One Reborn.
Micolash, Host of the Nightmare
Defeat Micolash, Host of the Nightmare.
Mergo's Wet Nurse
Defeat Great One: Mergo's Wet Nurse.
Defeat Cleric Beast.
Defeat Blood-starved Beast.
The Witch of Hemwick
Defeat the Witch of Hemwick.
Defeat Darkbeast Paarl.
Defeat Great One: Amygdala.
Defeat Martyr Logarius.
Defeat Great One: Celestial Emissary.
Ebrietas, Daughter of the Cosmos
Defeat Great One: Ebrietas, Daughter of the Cosmos.
Blood Gem Contact
Acquire a blood gem that imbues hunter weapons with special strength.
Acquire a Caryll Rune that endows hunters with special strength.
Chalice of Pthumeru
Acquire the Chalice of Pthumeru that seals the catacombs that form a web deep below Yharnam.
Chalice of Ailing Loran
Acquire the Chalice of Ailing Loran that seals the tragic land lost to the sands.
Chalice of Isz
Acquire the Great Chalice of Isz that seals the home of the cosmic kin.