Katar: The competitors create their signature blade by using the Hada technique. The pressure mounts as one of the smiths is pushed to his breaking point. (S1, ep 5)
The Zande Spear: Four bladesmiths must forge J. Nielson's favourite blade, a Damascus European dagger, before moving on to the Zande spear. (S5, ep 4)
Makraka: The finalists are tasked with crafting the Makraka - the sickle-shaped blade that was the favoured close-range weapon of the Zande warriors of Central Africa. (S4, ep 4)
The Falcata: Four bladesmiths must create a blade out of high carbon steel while also forging the hammer they'll use to make it. (S3, ep 4)
Spiked Shield: After being tasked with forging a blade from three or more different metals, the two finalists must prepare to craft a spiked shield. (S2, ep 4)
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)