This is a very simple/easy trophy that you'll gain early on in the game.. Unless you want to 5star EVERYTHING which is unnecessary.
When participating in any battle, you have the ability to pause the game then "Retry" (mostly to get a higher score/rating, really). But this isn't really necessary, simply ignore it and let your victory be a simple victory, if you win every battle you do you should easily have this by Episode 2. I got it not too long before the end of Episode 1.
Note: You'll most likely get the
along the way of doing this too.