Hope you get a lot of spare time on your hands this fall.
Developer Bungie has produced the full list of Trophies/Achievements; there are a total of 40, and some will definitely take some time (and practice).
There are four main enemy types and three character classes, and you better be prepared to embrace – and kill – 'em all if you want to earn that Platinum Trophy. For instance, there's the challenging Triple Play Trophy, which requires the player to kill a Warlock, Hunter and Warrior without dying in a single player vs. single player match. Other Trophies force you to complete missions in certain ways, while others ask you to fully customize your ship.
Some gamers are wondering about one Trophy in particular: The Dragon Slayer. You have to "kill a champion of the dark" to get it, but we're not entirely sure what that means. A super high-level enemy, perhaps…?
Related Game(s): Destiny