Really like what you've got going here. Neat visual style, good game loop. Took me a moment to figure out the escape mechanic, but that's more on me. I was surprised there were no hard game overs yet, maybe after failing to escape from the "den" for example. Maybe that's planned for the future?
Anyway, some solid stuff so far. If you can fill it out just a bit more, maybe a few bosses and "Endings", good and bad, you'll have something really great!