Mythras, in my opinion, has the best hand to hand combat system of any RPG. Nothing else even comes close. It can be a bit challenging to learn at first, though even as a beginner with this system I was able to run the game without the book with the exception of the special effects list, and some references to weapons here and there.
Knowing there is a bit of a learning curve, Design Mechanism in their infinite wisdom has released not just one, but THREE combat training modules to get you over the hump and enjoying some FORCED FAILURES and tasty impaling available on DrivethruRPG