I can't defeat this one boss that all black and has a sword and the game shows no description on how to defeat it

Add some, please! ^-^

to get hold of a controller, but not even sure that that does really make this into an actual game, it's not telling any story, games are stories, challenges and experiences. "Who" or "what" is Fiora is just one of the things missing, so I'm not sure a controller really brings anything, plugging it in did nothing to change that feeling of someone spent $100 to publish a prototype on Steam. A prototype that is merely an artistic rendering, not badly rendered, but still lacking something spicy to differenti...