Viking Battle Axe: After forging a weapon out of a "train spring", the two remaining bladesmiths will have to create a mighty Viking battle axe to prove their skill. (S1, ep 4)
Karabela: Four bladesmiths are tasked with forging blades out of steel from a chain and a sprocket, before moving on to craft the iconic Karabela sabre. (S5, ep 3)
The Katzbalger: Four competitors look to secure a place in the final where they will be tasked with forging the intricate renaissance side-arm, the Katzbalger. (S4, ep 3)
Butterfly Swords: Four contestants forge a signature blade from a pile of tools with the two survivors charged with crafting two Chinese Butterfly Swords to become the champion. (S3, ep 3)
The Scottish Claymore: Four bladesmiths have to work without any electricity in a gruelling qualifier, before the two finalists must forge the legendary Scottish Claymore. (S2, ep 3)
Chakram: Four bladesmiths compete to make the best weapon out of reclaimed metal, with the best two going forward to create a deadly Indian throwing weapon - the chakram. (S1, ep 3)
The Kabyle Flyssa: The bladesmiths are challenged to salvage a cannon to make signature blades, and the finalists recreate the North African Kabyle Flyssa. (S5, ep 2)
Deer Horn Knives: Four bladesmiths harvest the steel from a golf club to forge their signature blade, before the finalists must craft a pair of iconic double bladed weapons. (S4, ep 2)
Fan Favourites: Four former contestants return for a second chance, with the two finalists charged with creating a Hook Sword. (S3, ep 2)
Khopesh: After being tasked with forging a weapon from cable steel, the best smiths must create an Egyptian Khopesh. (S2, ep 2)