It's should be possible to still unlock obsessive compulsive if you only get the advanced schematics and not the regular ones.
Are you sure? I really hope that's the case because it's kind of discouraging on the stats screen when it says I've only collected 18/19 schematics. But I'll play through the rest of the game if that's the case. I'm only about 2-3 hours from finishing the game.