Glad you are enjoying them. Yes I have a Patreon (this is it)
There is a linked darned near minimum Blend file as part of the existing tutorial, available here. That said, I knew/know the process of creating action strips that work with game engines is a bit of a nightmare, it’s not unique to armory, every game engine I’ve worked with has fought with Blender over this. I was humming and hawing over covering it in detail and chose not to, as such a topic would be entirely about Blender. In the end after your comment I decided screw it, I’ll do such a tutorial. I’ll get it up on the site tomorrow once I proof read and polish it, but for now, here is the process of creating an Armory ready animation step by step in PDF form.