So I recently finished all challenges and got an idea. Whole time I felt  "immobile" meaning that I have to use limited attack paterns in order to don't get my face smashed too quick :P. The idea is simple 1st: use more buttons (for example use a mid. mouse button for thrust attack)
2nd: combos (just left and right slashes isn't enough ,for me at least :P).

Also same attacks can be used by bots making combat more deadly and intense.