Additional Info
Source: Achievements – Nature of Progress
Trophy: The Pack Leader (Master) SWTOR decoration, screenshots and information!
Hook: Wall Medium (Blue Square): The Trophy: The Pack Leader (Master) decoration fits into a blue medium square wall hook.
Hook: Wall Large (Purple Rectangle): The Trophy: The Pack Leader (Master) decoration fits into a large purple rectangle wall hook.
Operation trophies are earned by defeating bosses in Operations on different modes. You can check your progress in your Achievements in the Operation section under the Operation for that trophy.
The Wall Trophies are received by defeating the corresponding boss in the correct mode, and are an automatic reward.
The statue trophies are a random drop from those bosses and are not guaranteed.
Source: Achievements – Nature of Progress