A fantastic game that (for now) focuses on boss fights and it sure delivers! The two available bosses brims with quality both visually and mechanically. And this dev is not afraid of challenging the player, which is great!
I grinded the blacksmith for a while due to not knowing that there was a combo system available. This will surely be more clear in future builds!
Some minor things: I feel like you should make it visually more clear when the player was hit by an attack. Sometimes I wasn't really sure. The chip of yellow on the healthbar made it even more confusing as I kept thinking that that was health I just lost.