Will we be provided saves with the requirement like for Gutter Trash?
I don't really know how that file is working, I guess it sees all my save files or something?
Again, the datacrystal.js file is the only thing that carries over from game to game. It's written to the main folder when you finish a run, and you copy it into the plugins folder of the next game. I'll probably put up a guide with illustrations when 3 comes out though, as a lot of people still don't seem to get it.
The datacrystal is just a JSON object passing variables from the save from the last game, and the next game checks the variables to trigger the appropriate scenes. Really basic information like how many times you got knocked out and whether you got the "trained" ending or not. You can open it in notepad or something and see.