Thank you so much for incredibly kind words and I'm so glad you enjoyed it!
Yeah we wanted to make it difficult but still doable if you have a bit of skills.
Thanks, I'm/we're very proud of the idea for boss to be affected by the powerUps you choose. Choices matter but also gameplay varies and gives different styles of play a somewhat fair playthrough.
I've got something cooking along the lines of VS/BoO with some twists and my own feeling to it for a "real" project. But more on that later.