I think that in effective worktime it probably took about a week to make. Keep in mind though that I had a few long bug hunts and other litle headaches where I had to figure out the quirks of Blueprint and the way Unreal engine goes about doing it's thing.
But yeah, Blueprints are essentially still programming and having a programmers mindset and understanding of how to built up a program helps immensely. Blueprint just makes it all more visually pleasing to look at, with some really good intellisense.
