So I was very nervous about this through all of Mass Effect 2. 
  
 I couldn't get jack back loyal  despite having a completely full paragon bar, and almost no renegade--but I had sided with Miranda in my confrontation.   I was very apprehensive that not having her loyal meant someone would die.   
 
Fortunately  I made it through ME2 with everyone unharmed.  Even saved Kelly and the crew thank goodness.   
 
Enter Heavy Rain.  I've twice failed a challenge so far.  And I just can't deal with it.  It may as well just be a game over screen.   
 
I have a compulsive need to get the perfect ending in a game.  Fortunately these games don't have the kind of obscene requirements something like FFX2 has where you get the best ending if you play through the game 2-3 times doing every little fucking thing in the game.   It's just do everything and don't fail.   Talk  to everyone, get every upgrade, restart if dude dies.   
 
I read Peter Molyneux said that when their was a visual penalty for dying in games players couldn't accept it.  He at one point gave you a scar every time you lost a fight in Fable 2 and in play tests players couldn't deal with it.   I understand now, there's just a compulsion to not get a bad outcome that makes it may as well be a game over screen.    

So I was very nervous about this through all of Mass Effect 2. 
  
 I couldn't get jack back loyal  despite having a completely full paragon bar, and almost no renegade--but I had sided with Miranda in my confrontation.   I was very apprehensive that not having her loyal meant someone would die.   
 
Fortunately  I made it through ME2 with everyone unharmed.  Even saved Kelly and the crew thank goodness.   
 
Enter Heavy Rain.  I've twice failed a challenge so far.  And I just can't deal with it.  It may as well just be a game over screen.   
 
I have a compulsive need to get the perfect ending in a game.  Fortunately these games don't have the kind of obscene requirements something like FFX2 has where you get the best ending if you play through the game 2-3 times doing every little fucking thing in the game.   It's just do everything and don't fail.   Talk  to everyone, get every upgrade, restart if dude dies.   
 
I read Peter Molyneux said that when their was a visual penalty for dying in games players couldn't accept it.  He at one point gave you a scar every time you lost a fight in Fable 2 and in play tests players couldn't deal with it.   I understand now, there's just a compulsion to not get a bad outcome that makes it may as well be a game over screen.    

a perfect ending will still require you to replay through again to gain all trophys.
 try to look at it in a different way,  instead of 'failing' a part, your simple pushing the story in a different direction.