Boom Hammer


Imprints (Normal)


Imprints (Uncanny)


Imprints (Lost)

physical_atk.jpg blood_atk.jpg arcane_atk.jpg fire_atk.jpg bolt_atk.jpg
90 -- -- 60 --
slow_poison.jpg rapid_poison.jpg VS_kin.jpg VS_beasts.jpg durability.jpg
-- -- 100 100 100
Requirements & Scaling
strength.jpg skill.jpg bloodtingue.jpg arcane.jpg qs_bullet_use.jpg

Boom Hammer is a Trick Weapon in Bloodborne. It was added with The Old Hunters expansion. There are 3 versions of this weapon: Normal, Uncanny and Lost. The only known differences being the Gem Imprints and the locations in which they are found.


Boom Hammer Description

"A trick weapon used by the old hunters, and crafted by the workshop heretics, the Powder Kegs.
A giant hammer equipped with a miniature furnace. When ignited and fired, it emits a volley of flame that explodes furiously upon impact.
Crush the beasts, then burn them - the brute simplicity of the Boom Hammer was favored by hunters with an acute distaste for beasts."


Boom Hammer Information

  • Transforming the weapon makes the hunter ignite the hammer, giving bonus fire damage to the next attack.
  • Requires 16 Blood Stone Shards, 16 Twin Blood Stone Shards, 16 Blood Stone Chunks, 1 Blood Rock and ?? Blood Echoes to fully upgrade
  • To perform a Leap Attack, tap forward on the Left Stick as you press R2
  • To perform a Transformation Attack, press L1 while performing another attack.





  • The Hunter's Nightmare. Inside a house that looks out of Central Yharnam, the same that is the shortcut to the cleric beast in the main game, where the 10 quicksilver bullets used to be. Be sure to shoot the explosives around the item (or act fast), as the wheelchair huntsman's corpse conceals a delayed molotov set to trigger when you try to grab the Boom Hammer, potential killing you in a huge blast.

Uncanny Boom Hammer

  • If you have the normal version: Create Glyph 8i29rqz3 (Pthumeru Labyrinth) and buy from Bath Messengers up a ladder from the main room for 28,000 Blood Echoes.
  • Can also be found in the lower hintertomb chalice. Sold by messengers in the 3rd layer of the dungeon.

Lost Boom Hammer

  • If you have the normal version: Create Glyph 8i29rqz3 (Pthumeru Labyrinth) and buy from Bath Messengers up a ladder from the main room for 28,000 Blood Echoes.


Player Notes

  • Attacking with an ignited hammer consumes roughly double the stamina as non-ignited attacks.
  • Ignited hammer also lowers the amount of health recovered on rally attack.
  • When ignited, any slam attack (charged R2 and jumping attack) will create an explosion, increasing your AoE.
  • The transformation attack has a thrust animation but still deals blunt damage.
  • With 50 arcane and weapon at plus 10, it gets +29 phys attack and +64 fire.





90 - - 60 - - - 100 100 C E - D -


99 - - 66 - - - 100 100 B E - D -


108 - - 72 - - - 100 100 B E - D -


117 - - 78 - - - 100 100 B E - D -


126 - - 84 - - - 100 100 B E - D -


135 - - 90 - - - 100 100 B E - C -


144 - - 96 - - - 100 100 B E - C -


153 - - 102 - - - 100 100 B E - C -


162 - - 108 - - - 100 100 A E - C -


171 - - 114 - - - 100 100 A E - C -


180 - - 120 - - - 100 100 A E - C -


Movesets & Videos


Regular Moveset
Move Damage Type & Modifier Stamina Effect
R1 Combo 1.00x, 1.02x, 1.04x ?? Swiping attacks, starting from right to left and moving onto left to right in alternation.
Backstep R1 .90x   Thrusts the hammer straight ahead.
Dodge R1 .90x ?? ~ ?? After the roll, performs a sweeping horizontal arc from right to left.
Dash R1 1.10x ?? (+run) Performs an uppercut sweeping starting from the right foot and ending at the left shoulder.
R2 Attack 1.35x ?? An upwards diagonal swing, starting from the right foot and ending at the left shoulder
Charged R2 1.90x ?? An overhead ground slam.
Backstep R2 1.45x   Performs a straighter uppercut that nicks the ground.
Dodge R2 ?? ?? After the roll performs an upwards diagonal swing, starting from the right foot and ending at the left shoulder. Has more of a pronounced windup.
Dash R2 1.45x ?? Performs an overhead downwards smash.
Leap 1.50x ?? (+run) Performs a leapong overhead ground slam.
Transform Attack .90x ?? (+x)  
Transformed Moveset
Move Damage Type & Modifier Stamina Effect
R1 Combo 1.00x ?? A fiery swing from right to left.
Backstep R1 1.00x   Thrusts the fiery hammer straight ahead.
Dodge R1 ?? ~ ?? ?? ~ ?? After the roll, performs a fiery sweeping horizontal arc from right to left.
Dash R1 1.10x ?? (+run) Performs a fiery uppercut sweep starting from the right foot and ending at the left shoulder.
R2 Attack 1.30x ?? A flaming upwards diagonal swing starting at the right foot and ending at the left shoulder.
Charged R2 1.80x ?? An overhead slam with a small AoE explosion.
Backstep R2 1.20x   Performs a flaming sweep uppercut.
Dodge R2 ?? ?? After the roll performs an upwards flaming diagonal swing, starting from the right foot and ending at the left shoulder. Has more of a pronounced windup.
Dash R2 1.45x ?? (+run) Performs a flaming overhead downwards smash.
Leap 1.50x ?? Performs a leaping flaming overhead downwards slam.
Transform Attack .90x ?? (+x)  




When the Boomhammer is lit, Beast Patient mobs will back away from the player as if they had a torch equipped. (May need to initiate primed attack first)




Trick Weapons
Amygdalan Arm  ♦  Beast Claw  ♦  Beast Cutter  ♦  Beasthunter Saif  ♦  Blade of Mercy  ♦  Bloodletter  ♦  Blunderbuss  ♦  Burial Blade  ♦  Cannon  ♦  Chikage  ♦  Church Cannon  ♦  Church Pick  ♦  Evelyn  ♦  Fist of Gratia  ♦  Flamesprayer  ♦  Gatling Gun  ♦  Holy Moonlight Sword  ♦  Hunter's Torch  ♦  Hunter Axe  ♦  Hunter Blunderbuss  ♦  Hunter Pistol  ♦  Kirkhammer  ♦  Kos Parasite  ♦  Loch Shield  ♦  Logarius' Wheel  ♦  Ludwig's Holy Blade  ♦  Ludwig's Rifle  ♦  Piercing Rifle  ♦  PVE Builds and Weapons Review  ♦  Rakuyo  ♦  Reiterpallasch  ♦  Repeating Pistol  ♦  Rifle Spear  ♦  Rosmarinus  ♦  Saw Cleaver  ♦  Saw Spear  ♦  Serrated Weapons  ♦  Simon's Bowblade  ♦  Stake Driver  ♦  Threaded Cane  ♦  Tonitrus  ♦  Uncanny Chikage  ♦  Weapon Moveset Damage Comparison  ♦  Whirligig Saw  ♦  Wooden Shield


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    • Anonymous

      One of my favorite fromsoft trolls of all time is that moment when you get the boom hammer for the first time, press L1 to see what the transformed version looks like, go "awwww sick" press R1 and explode because of the explody barrels right next to where your pick it up

      • Anonymous

        Why does the damage seem so low? I really don't get it, even on enemies weak to fire for how slow it swings it just seems to do little damage. Any advice? In NG so nourishing gems are off the table, is it only a ng+ weapon?

        • Anonymous

          i've kitted this thing out with a full set of cursed nourishing gems and it hits an AR of 900+, which looks really good, yet for some reason its damage is just very underwhelming, even when primed. Its a fun weapon with good aoe but for STR/ARC builds it just seems to be outclassed by weapons like Logarius' wheel and Holy Moonlight Sword, they just do so much more consistent dps while still having good utility of their own. Kind of a shame

          • Anonymous

            There is a funny bug if you do a fully charged, primed heavy attack and then chain into a jumping attack, you will perform the primed jumping attack explosion and all without needing to buff inbetween. However, this jump attack seems to have no hitbox and sadly cannot deal any damage.

            • Anonymous

              Odd thing I found if you do one of the AOE attacks in the hunters dream the explosion also happens next to the chest no matter where you are

              • Anonymous

                Quite dissapointing weapon. Very slow and has bad damage and basically needs to be constatly ignited. SO if you factor in that time it might just have the lowest dps in game of any weapon. But then the charged attack is where its at right? Not really, explosion looks badass but has an AoE of a punch and the damage similar to a normal lightweapon charged attack (apart from fire weak enemies i suppose). I really wanted to like this weapon and i have tried... but sadly its just boring. Should be called Pop Hammer, there is not alot of actual boom here.

                • Anonymous

                  If you look carefully, when you press L1 to transform the weapon as a follow up to R1 or R2, the hunter ignites it by rubbing the top part against the ground. This is where the hunter also ignites the boom hammer during the regular standing/walking animation. I assume there is flint or some combustible material on the top part of the furnace.

                  • Anonymous

                    According to the comments below, I'm THE ONLY one who discarded this weapon. I'm looking forward to giving it a try, then...

                    • Anonymous

                      Man, this thing owned Ludwig almost as completely as the Whirligig Saw and that's really saying something. I guess I was hitting multiple hitboxes with the vertical basic swings, because after the first fifth of his health he was, in practice, stun-locked for the rest of the fight.

                      • Anonymous

                        An important thing to know about this weapon is that the charged R2, when buffed with the L1, has some seriously obnoxious phantom range in a radius around the place of bonk, being about 50% further outside of its visual effect (tho I feel it may be way more than that). This, paired with its innately long reach, means you can simply out-space enemies like no other weapon in the game

                        • Anonymous

                          I used to think of this as a second-tier weapon, but just now playing with a perfect build for this and holy ******* this thing is an absolute beast. Crush them and burn them indeed.

                          • Anonymous

                            "Yeah so there's giant wolf people tearing everyone to shreds, ancient eldrich horrors that the Church decided to summon because they were high, and the risk of being randomly pulled into a nightmare realm to be tormented forever, anyway here's an exploding hammer and some edgy clothes, good luck buddy" -Powder Kegs, probably

                            • Anonymous

                              I always get an extremely satisfied feeling when sending those annoying crackhead madmen flying with this beast . especially in later dungeons when they start appearing waaaaaay too damn often

                              • Anonymous

                                Boomhauer: "Man I dang yo' thang, mang, click the tip 'n hammer dang dem, charge 'em, dem 'BOOOOOOOM HAMMEEEEEEER!' tell you hwat, man."

                                • Anonymous

                                  How come it doesn't tell u anything about the stats to use for this weapon or am I just not getting it lol

                                  • Anonymous

                                    I created a build named "Holy build" with Strength (50) and Arcane (30), Skill (13), Vitality (50) and Endurance (30) and level character at 130. Theoretically, Holy Moonlight sword is the best weapon for this (and that's true), but I found Boom Hammer very fun in this build. And I mean for PvP, really I has been surprised by BH, I didn't think it was so efficient against players, especially if you use Old Hunter Bone in combination with it. It doesn't have a manifold moveset, but this is its power: easy to master it, good range and very strong! My normal version (two radial slots and one waning) now possesses 808 AR, with a radial cursed gems that boost Phy. att. +27,2% (negative effect: stamina cost increased by 3,3%), the other radial +25,3% Phy. Att. (negative effect: attack down vs Kin -9,5%) and the waning is great: +22,3% in Phy. Att., adding +13,5 flat bolt damage (negative effect: attack down vs Kin -10% circa). If you want to reach level 150, you can enhance Skill from 13 to 25 (doing so you'll create a super-quality build), and dividing remaining 8 points between Arcane and Endurance. Talking to runes I use: Great Lake, Clockwise metamorphosis and Anti-clockwise metamorphosis (all these tier 3).

                                    • Anonymous

                                      Love this weapon for taking out normal enemies, but it isn't great against bosses in my experience. Especially faster ones. Absolutely wins for pure swag factor with that cocking animation though.

                                      • Anonymous

                                        I love this weapon. this was the weapon that got me through my first playthrough and the one that will get me through my next. some blunt attack gems and this thing is golden.

                                        • Anonymous

                                          Would it be better to put Fire runes into this thing to give it 100% fire output instead of splitting it? Or is it better with nourishing?

                                          • Anonymous

                                            This thing is MASSIVELY underrated in my opinion. A lot of people wrote it off a bit because it's such a simple weapon, much like the Tonitrus. While its moveset is simple though, it's extremely effective as it's essentially a miniaturized Kirkhammer for one handed combat, and being able to ignite the hammer for either R1's crowd control of R2's big boom for annoying enemies like Lanterns gives you a small but effective degree of versatility to a simple moveset.

                                            Plus it just looks really cool.

                                            • Anonymous

                                              This thing absolutely wrecks groups of mobs. Its awesome in the dungeons with all the tight hallways. Its amazing against all Kins and most Beasts. It just melts Amygdala and Ebrietas with that running R2 to the head. You do not get the DPS of a fire or lightning saw spear, but , with the Adept gems you can easily get from the Winter Lantern, your on for a total blast. Good damage when not lit, explosive damage when lit. Managing timing and distance makes for a really rewarding experience when you grouped the enemy together and one shot five of them in one big boom. And, if you land that charged R2 in PVP, its one of the most satisfying feeling a weapon in BB can offer IMO. Its easy to parry and kind of slow, but when it lands, you know where your blood chunk went, that's for sure.

                                              • Anonymous

                                                You don't want to hear about Skill weapons. You want to hear about Rifle Spears, Stake Drivers and Boom Hammers. I'm Torgue and I have one question and one question only... EXPLOSIONS?

                                                • Anonymous

                                                  For a high-damage continuous combo, prime your weapon and do R1, L1, R1, L1, etc. This will cause you to alternate between primed R1 attacks and re-priming transform attacks, causing you to do repeated flaming R1s. There is a delay between attacks but most enemies will be too staggered to retaliate mid-combo, allowing you to combo until you run out of stamina. Just don't try it against enemies who can resist being staggered by it.

                                                  • Anonymous

                                                    Awesome weapon for enemy hunter NPCs. Leaping attacks or charged R2s send them flying, plus fire attacks good for beasts. Underrated weapon

                                                    • Anonymous

                                                      This is really handy on enemy hunter NPCs. It's charged R2s are fast and when they connect it sends hunters flying. Plus you have another chance to hit with a second charged R2 afterwards since the charge time is low. Underrated weapon.

                                                      • Anonymous

                                                        So I went to dungeon 8i29rqz3, and instead of there being the bath messengers, patches was there instead. It would seem that once you befriend patches he replaces the bath messengers in dungeons, and his items don't cost anymore than buying it from the dungeon messengers.

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