I wish there was a step-by-step walkthrough for dummies like me with the plugins for doing this.
At the very least, I picked up the plugin for greenworks and found out how large an achievement graphic needs to be.
The problem is the code for adding them is controlled by Valve, so there's nothing Degica can do to help with this. You have to submit your game to them and get all the info from them.
There's a plugin for it on the forums. I'm just trying to figure out how to use it correctly - it won't matter for a while though since I'm nowhere close to finishing my game.
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