Elden Ring: Shadow of the Erdtree adds over 100 new weapons spread across 8 new weapon groups, as well as the 32 pre-existing categories in the Elden Ring base game. This is a complete list of all new weapons in the DLC as well as their locations.
Ancient Meteoric Ore Greatsword
Colossal Sword
Ruined Forge Of Starfall Past
Ansbach’s Longbow
Bow
Defeat Ansbach
Anvil Hammer
Colossal Weapon
Ruined Forge Lava Intake
Backhand Blade
Backhand Blade
North of Scorched Ruins
Barbed Staff-Spear
Great Spear
Defeat Jori, Elder Inquisitor
Beast Claw
Beast Claw
Defeat Logur The Beast Claw
Black Steel Greathammer
Great Hammer
Defeat Black Knights
Black Steel Greatshield
Greatshield
Defeat Black Knights
Black Steel Twinblade
Twinblade
Scadu Altus
Bloodfiend’s Arm
Colossal Weapon
Defeat Bloodfiends
Bloodfiend’s Fork
Spear
Defeat Bloodfiends
Bloodfiend’s Sacred Spear
Great Spear
Defeat Bloodfiend Mages
Bone Bow
Light Bow
Belurat, Tower Settlement
Bonny Butchering Knife
Greataxe
Bonny Village
Carian Sorcery Sword
Thrusting Sword
Castle Ensis
Carian Thrusting Shield
Thrusting Shield
Storehouse, Back Section
Chilling Perfume Bottle
Perfume Bottle
Lamenter’s Gaol
Claws Of Night
Claw
Defeat Swordhand Of Night Anna
Curseblade’s Cirque
Backhand Blade
Defeat Curseblades
Dancing Blade Of Ranah
Curved Sword
Defeat Dancer Of Ranah
Dane’s Footwork
Hand-To-Hand
Defeat Dryleaf Dane
Deadly Poison Perfume Bottle
Perfume Bottle
Purchase from Thiollier
Death Knight’s Longhaft Axe
Greataxe
Defeat Death Knight
Death Knight’s Twin Axes
Axe
Defeat Death Knight
Devonia’s Hammer
Colossal Weapon
Defeat Crucible Knight
Dragon-Hunter’s Great Katana
Great Katana
Defeat Ancient Dragon-Man
Dryleaf Arts
Hand-To-Hand
Defeat Dryleaf Dane
Dryleaf Seal
Sacred Seal
Castle Watering Hole
Dueling Shield
Thrusting Shield
Specimen Storehouse
Euporia
Twinblade
Belurat, Tower Settlement
Falx
Curved Sword
Defeat Hornsent
Fire Knight’s Greatsword
Colossal Sword
Defeat Fire Knights
Fire Knight’s Seal
Sacred Seal
Shadow Keep Church District
Fire Knight’s Shortsword
Dagger
Defeat Fire Knights
Firespark Perfume Bottle
Perfume Bottle
Castle Front
Flowerstone Gavel
Hammer
Defeat Bayle The Dread and visit Dragon Communion Priestess
Forked-Tongue Hatchet
Axe
Defeat Imps
Frenzyflame Perfume Bottle
Perfume Bottle
Church Ruins
Freyja’s Greatsword
Curved Greatsword
Defeat Freyja
Gazing Finger
Colossal Weapon
Metyr, Mother Of Fingers’ Remembrance
Golden Lion Shield
Medium Shield
Complete Freyja’s quest
Golem Fist
Fist
Taylew’s Ruined Forge
Great Katana
Great Katana
Belurat, Tower Settlement
Greatsword Of Damnation
Greatsword
Midra, Lord Of Frenzied Flame’s Remembrance
Greatsword Of Radahn (Light)
Colossal Sword
Radahn’s Remembrance
Greatsword Of Radahn (Lord)
Colossal Sword
Radahn’s Remembrance
Greatsword Of Solitude
Greatsword
Defeat Blackgaol Knight
Horned Warrior’s Greatsword
Curved Greatsword
Defeat Horned Warriors
Horned Warrior’s Sword
Curved Sword
Defeat Horned Warriors
Igon’s Greatbow
Greatbow
Defeat Bayle the Dread and find Igon’s corpse
Lamenting Visage
Torch
Lamenter’s Gaol
Leda’s Sword
Light Greatsword
Defeat Leda
Lightning Perfume Bottle
Perfume Bottle
Cerulean Coast
Lizard Greatsword
Greatsword
Defeat Imps
Madding Hand
Fist
Defeat Madding Hand
Main-gauche
Dagger
Shadow Keep
Maternal Staff
Glintstone Staff
Defeat Count Ymir
Messmer Soldier Shield
Medium Shield
Defeat Messmer Soldiers
Messmer Soldier’s Axe
Axe
Defeat Messmer Soldiers
Messmer Soldier’s Spear
Great Spear
Defeat Messmer Soldiers
Milady
Light Greatsword
Castle Ensis
Moonrithyll’s Knight Sword
Colossal Sword
Defeat Moonrithyll, Carian Knight
Nanaya’s Torch
Torch
Midra’s Manse
Obsidian Lamina
Reaper
Ansbach
Pata
Fist
Church Of Benediction
Poisoned Hand
Fist
Belurat, Tower Settlement
Poleblade Of The Bud
Halberd
Romina, Saint Of The Bud’s Remembrance
Putrescence Cleaver
Greataxe
Putrescent Knight’s Remembrance
Queelign’s Greatsword
Heavy Thrusting Sword
Queelign in Shadow Keep Prayer Room
Rabbath’s Cannon
Ballista
Rabbath’s Rise
Rakshasa’s Great Katana
Great Katana
Defeat Rakshasa
Red Bear’s Claw
Beast Claw
Defeat Red Bear
Rellana’s Twinblade
Light Greatsword
Rellana, Twin Moon Knight’s Remembrance
Repeating Crossbow
Crossbow
Fort of Reprimand
Serpent Crest Shield
Medium Shield
East of Belurat, Tower Settlement
Serpent Flail
Flail
Fog Rift Fort
Shadow Sunflower Blossom
Colossal Weapon
Scadutree Avatar’s Remembrance
Shield Of Night
Small Shield
Bonny Gaol
Smithscript Axe
Axe
Taylew’s Ruined Forge
Smithscript Cirque
Backhand Blade
Ruined Forge Of Starfall Past
Smithscript Dagger
Throwing Blade
Ruined Forge Lava Intake
Smithscript Greathammer
Great Hammer
Taylew’s Ruined Forge
Smithscript Shield
Small Shield
Taylew’s Ruined Forge
Smithscript Spear
Spear
Ruined Forge Of Starfall Past
Spear Of The Impaler
Great Spear
Messmer The Impaler’s Remembrance
Spiraltree Seal
Sacred Seal
Near Northern Nameless Mausoleum
Spirit Glaive
Halberd
Charo’s Hidden Grave
Spirit Sword
Curved Sword
Cerulean Coast
Spread Crossbow
Crossbow
Castle Front Grace
Staff Of The Great Beyond
Glintstone Staff
Metyr, Mother Of Fingers’ Remembrance
Star-Lined Sword
Katana
Defeat Demi-Human Queen Marigga
Stone-Sheathed Sword
Straight Sword
Fog Rift Catacombs, or Ruins Of Unte, or Rauh Ancient Ruins
Swift Spear
Spear
Castle Front
Sword Lance
Heavy Thrusting Sword
Commander Gaius’s Remembrance
Sword Of Darkness
Straight Sword
Fog Rift Catacombs, or Ruins Of Unte, or Rauh Ancient Ruins
Sword Of Light
Straight Sword
Fog Rift Catacombs, or Ruins Of Unte, or Rauh Ancient Ruins
Sword Of Night
Katana
Jolán in Count Ymir’s quest
Thiollier’s Hidden Needle
Fist
Thiollier
Tooth Whip
Whip
Whipping Hut
Velvet Sword Of St. Trina
Straight Sword
Fissure Cross
Verdigris Greatshield
Greatshield
Moore
Wolf Crest Shield
Medium Shield
Castle Ensis
Those are all of the new weapons in Elden Ring: Shadow of the Erdtree.