Personally, I just kill the whole group in front of the forge with Musahi’s Black Blade.
I may get hit once or twice at most in the encounter if I’m not careful enough.

Build:

Strength 1
Agility 4 - Precision Strike - Tolling Thrust
Vitality 2 - Resurgence
Authority 0
Grit 4 - Endurance - Steel Thewed
Expertise 1

Yes, I pick Resurgence because I have Steel Thewed.