Maintenance for the week of September 30:
• [IN PROGRESS] PC/Mac: NA and EU megaservers for maintenance – September 30, 4:00AM EDT (8:00 UTC) - 8:00AM EDT (12:00 UTC)
• Xbox: NA and EU megaservers for patch maintenance – October 2, 6:00AM EDT (10:00 UTC) - 12:00PM EDT (16:00 UTC)
• PlayStation®: NA and EU megaservers for patch maintenance – October 2, 6:00AM EDT (10:00 UTC) - 12:00PM EDT (16:00 UTC)
Pact Hero is dependent on five Ebonheart Pact sub-achievements; Stonefalls Adventurer, Deshaan Adventurer, Shadowfen Adventurer, Eastmarch Adventurer, and Rift Adventurer. The progress for each one of these can be tracked in-game under the Quests section of Achievements.
EP Hero is actually probably the easiest title to get (besides Recruit for going to Cyrodiil and skipping the intro quest). Each EP region has a specific number of quests that need to be completed in order to finish the achievement for that zone. Finish all EP zones and the title will unlock.
As Enodoc noted, progress can be tracked in your quest achievements.