Hunter tools are different items which will make your journey through Yharnam easier. While you can use the items infinitely they'll still consume a set number of Quicksilver Bullets for each usage, so keep that in mind. Below you will find a list of all the tools and where to find them:
 

Tool	Location	Details
Old Hunter Bone	Abandoned Workshop	Found on a grave in the secret Abandoned Workshop area. (See  The Source of the Dream for more info.)
Beast Roar	Forbidden Woods	At the entrance to the mob village, turn left and go up the hill. Past the tower and abandoned building, you should reach another abandoned building containing the Beast Roar tool.
Empty Phantasm Shell	Byrgenwerth	Found in a chest near the Lake entrance.
Executioner's Gloves	Castle Cainhurst	Jump down from the window on the second floor of Castle Cainhurst. You will find the tool in a chest.
Messenger's Gift	Nightmare Frontier	In the Swamp section of the Nightmare Frontier. Guarded by a weird jellyfish Frenzy mage. From the lamp, follow the path given, and you will reach a bridge with two enemy hunters in the distance. Drop down from the bridge and follow the swamp to a cave, where you'll find the tool.
Tiny Tonitrus	Unseen Village	In a chest in the same room that you find the Upper Cathedral Ward key. See  The Choir for more information.
A Call Beyond	Altar of Despair	After killing the Celestial Emmisary in the Upper Cathedral Ward area, you can break a window directly in front of the newly created lamp. The Tool can be found on a corpse on the right side of the room.
Choir Bell	Nightmare of Mensis	After killing Micolash, proceed until you find a cage lift. While the lift is moving down, there will be a doorway you can roll through about halfway up. You'll reach a bridge area, and from here you sohuld be able to proceed straightforwardly to a lever. This lever will drop Mother Brain into a chasm, disabling the annoying frenzy insta-kills that can sometimes occur throughout the level. Next, backtracking a tiny bit, you'll find a hole in the ground. Dorp down and you'll eventually come to a room with a narrow walkway, and a frenzy mage guarding a chest on the otherside. In this chest is the tool.
Augur of Ebrietas	Lecture Theatre	On the first floor, in one of the lecture rooms. Requires the Theatre key to get there, which is also found in the lecture theatre. For more information on how to get to the lectuer theatre, see  Nightmare Lecture Building.

Hunter's Craft Video Guide

Video by PowerPyx.

For this trophy you need to acquire all of the Hunter Tools. Hunter tools are used as permanent consumables that cast spells at the cost of bullets. The tools are as follows:

• A Call Beyond : Found in the short section between Celestial Emissary and Ebrietas, Daughter of the Cosmos.
• Augur of Ebrietas : Found in a chest behind a locked door on the ground floor of the Lecture building. The key to open this door is found in the same area.
• Beast Roar : Found in a shack in the Forbidden Woods, shortly after the caged hounds and the portcullis gate with the lever.
• Choir Bell : This is found in a chest shortly after pulling the lever to release the Mother Brain. Refer to  Weapon Master for more information.
• Empty Phantasm Shell : In a chest in the upper floor of the Byrgenwerth mansion.
• Executioner's Gloves : Found in a chest in the library section of Cainhurst library. Refer to  Cainhurst on information on how to access this area.
• Messenger's Gift : Found in the poison swamp area within Nightmare Frontier.
• Old Hunter Bone : This can be found in the Abandoned old workshop. Refer to  The Source of the Dream on information on how to access this area.
• Tiny Tonitrus : This is found in the same room as the key needed to access the Upper Cathedral. Refer to  The Choir for more information.

For this trophy you also require the two workshop tools, as follows:

• Blood Gem Workshop Tool : Found in a chest in Central Yharnam shortly after the  Father Gascoigne boss fight.
• Rune Workshop Tool : Found on a corpse in the room immediately after the optional  The Witch of Hemwick boss fight.