Danganronpa 2: Goodbye Despair Anniversary Edition

Island Mode in this game is much easier to complete than School Mode was in the first game. All you need is to have all the hope fragments. So if you have earned the Mr. Congeniality trophy by the end of this, you'll clear Island Mode even if you fail miserably at the tasks. So if you haven't earned the Mr. Congeniality trophy yet, spend time with characters and give presents until you do since Island Mode is a great chance to get most of them tackled.

However, it is to your benefit to try and complete the tasks to get trip tickets so you can get all the character endings since that is another trophy. Just don't worry too much about the tasks until you have all the report cards filled in and have earned the Mr. Congeniality trophy.