Greetings, ninjas!
I'm a bit late but there's the article of last week, showing the development process from the Stage 1 Boss and Miniboss. We originally made these last year, but the Article is still interesting to read and learn how we made most of the decisions back there.
Hope you like it!
http://www.indiedb.com/games/meawja/news/dev-log-03-stage-01-boss-and-miniboss
This log was posted originally on oct/31/2016. Since the game is still in development, there may be changes to the final version.