Thank you so much! Glad you enjoy the game!
And yeah I agree, at the moment the there isn't a lot of gameplay mechanic to add diversity to the way players can play. Hopefully when I add more feature the gameplay will feel more dynamic. The health currently is actually shown by how fast the blade rotates, but I do feel that it's not obvious enough. However I am planning to continue my original plan to include a Stamina, Health and Damage bar. Stamina being regeneratable, while Health can't.