Kantor on 25 June 2012
It wasn't difficult like the ones you are all describing, but it was certainly nerve-wracking. Near the end of BioShock, confronting Andrew Ryan, and seeing him command you; being completely unable to control your actions, and finally clubbing him to death despite the fact that you don't want to do it anymore.
(Former) Lead Moderator and (Eternal) VGC Detective 
