To unlock the blueprints you need to get at least one achievement in each of those games respectively. If after getting an achievement it still is not unlocking we'd definately like to know about it.
Okay, as soon as I unlock an achievement in Raskulls, I'll see if it unlocks the blueprint. Raskulls seems to be exceedingly difficult for me. I have been playing it for weeks now, and have not been able to win anything, or even complete a task, hence, no achievements.
It's not the game's fault though, I just don't have very good hand-eye coordination since having a stroke a couple of years ago, so I may never be able to unlock any achievement in that game. I wish there was another way to get the blueprints, like some sort of cheat or something.