Really nice job with this game, Ciso! I was surprised by how smooth it was in the browser. I also really like all of the sound effects and the background music. They really breath life into the game and give it a whole other dimension. Great job as well with the pixel art animation, especially how the cape flows while the character is moving.
Would love to learn more about the character's backstory. He kind of looks like a Mandalorian bounty hunter like Boba Fett, who also happens to be my favorite character from Star Wars. You may also consider mapping the controls such that there is a way to play the game using only the keyboard, especially for laptop users.
Great job with all of the programming. What do you think will be the core gameplay loop and where do you think you'll want to take the game next? Will this be an endless dungeon crawl where you collect loot and upgrade your character? I had a lot of fun playing this and I'm looking forward to seeing your future updates!