The mission must first be activated by a guild member with "Mission Control" permission. A minimum of 3 guild members currently representing the guild must then participate in an event.
There are 3 levels, each with different requirements and rewards.
Win 1 PvP Match. Time limit: 30 minutes. Recommended: 3 players.
Win 2 PvP Match. Time limit: 40 minutes. Recommended: 5 players.
Win 3 PvP Matches. Time limit: 55 minutes. Recommended: 8 players.