Just gave it a go. Try the Escape key. Sorry should have added better instructions.
There is meant to be stuff to select but it started messing up generating it on the first attempt.
I did end up figuring it out. It was because I was playing in fullscreen so the escape key was conflicting. After hitting it a few times it worked. I did like the game. It was simple and I can see where you were going with the sword upgrade mini-games. Any chance to beat my meat. I especially loved the "paper doll" aesthetic of the enemies. It's unique compared to all the pixel art you typically see.