In my best run, I lasted 65s with 26 kills. I really liked the art style. It felt like I was inside a manga book. I also was really impressed with the layout of your page. The size of the game was perfectly fit into the web page to make it feel even more like a page in a book. The music had a nice intensity to it too.
I could not figure out what the special power attached to 'Q' did. While it was fun fighting bad guys, this would have made a killer platformer.
You have a really nice art style and great basis for a Metroidvania game. I really encourage you to pursue making this game into something than just survival.