The Kampilan: Four bladesmiths head to a scrap yard to create their signature blades, then recreate a fearsome battle weapon known as the kampilan. (S4, ep 17)
The Shamshir: The contestants get to work on a unique bowie knife in the first round, before two will go on to craft a deadly sabre called The Shamshir. (S4, ep 16)
Redemption: Four previously eliminated bladesmiths return to the forge for a shot at redemption, but they face a challenge more difficult than they could imagine. (S3, ep 16)
Tabar Shishpar: Four more bladesmiths head into the forge to prove they have the mettle to master metal. (S4, ep 15)
The Pata: Former winners return for the chance to craft a weapon known for its unique mechanics and deadly double-edged blade: the pata. (S3, ep 15)
Ngombe Ngulu: The competing smiths must forge a weapon from an elevator cable, before two go on to recreate the African Ngombe Ngulu - an executioner's sword. (S4, ep 14)
The Zweihander: Four competitors must weld blades from tiny cubes of steel before two go on to forge the mighty German Zweihander. (S3, ep 14)
The Gladiators' Scissor: After a first round besieged with setbacks, two bladesmiths go on to the finals to craft an Ancient Roman gladiator's scissor. (S4, ep 13)
The Haladie: After using high carbon steel to forge a hatchet, the two finalists must create an ancient Indian weapon used to both stab and slice. (S3, ep 13)
The Kachin Dao: After two turbulent nautically themed rounds, two smiths head the final round to forge the Kachin Dao, a deadly headhunting sword. (S4, ep 12)