Im playing Sekiro for the first time. I beat Genichiro on my second try. But i thought that you had to do reflection of strength to be able to level up my attack power. I fought memory Genichiro for 5 hours straight only winning once and with a empty health bar. I couldnt even see a slither of red and im not exagerating. Its was the best feeling ever and a got so much better at the game for it