Funny that you mention homing and hard mode. I actually got yelled at by the musician because he ran into a bug that let you keep it. It was funny, I think he died very quickly, hard mode has been designed with Yellow in mind and other weapons probably make it unwinnable. In the future, each memento path will probably have a customized hard mode, with different corrupted enemy positions and/or behaviors.
I'm glad you enjoyed the game. Thank you for playing.