Sooooo good!! Loved the character and overcooked type level! Indicators over the next steps required were a great visual cue. The visualization of the blade after each step being seen in the players hands was so great to make it feel like I'd actually changed it!! I particular liked the glowing metal after heating and the particle effects you used :D
My one feedback would be to incorporate some randomness as others have mentioned in the handle attachment and a possible future state of having different metals to melt or types of handles for different orders just to mix it up!!
While I was too slow on my last playthrough having 4 blades/orders unfulfilled, I really enjoyed playing your game!! Great job :D