As others have said I was also unable to move or shoot in the boss room. I like the core gameplay a lot though, I'm a big fan of twin stick shooters but I think it would be nice if you had a cursor when being played with a mouse, aiming was difficult without one. I also think the text speed could be a little faster, or if you could load all the text with E instead of immediately going to the next line of dialogue. Finally I liked the music, but the main theme in the arena is a little short and sort of faded into the backgrounded after a few loops, and in the boss fight I could hear the song from the beginning of the game playing as well as the boss theme.