Who has unlocked all three achievements/throphies? I've never actually paid attention to what these were, how how they were grouped together. I just unlocked the Combat Veteran, and I will complete Up To The Challenge after I find some ghouls with Benny's Gun. Then i'll go visit House with a 9 Iron. But Pro's Only looks insane! I can't imagine that one would be any fun to try and complete. How were you guys able to pull it off the three star challenge one?