I think you bring up vauge, sometimes irrelevant points. Link's methods of combat are not polar opposites of chivalry and nor is he a dirty fighter. Its not as if Link is calculating, brutal murderer. No quarter, certainly but as people have brought up, its demons that he is dealing with who you might as well put on par with the bane of humanoid existence, right? And what defines noble and chilvarous combat is kind of sketchy as it is anyway. There's no definite establishment to the code to it and I think Link adheres to most of the standards, but I think Link fights honorable enough. Its not as if he uses every move to inflict inhumane pain.