The Secret World Gaming, Tips, Tricks, and News!
Story – These quests are the main story of The Secret World, typically taking you through each zone.    
Dungeon – These quest lead you into the dungeons, usually advance as each boss is killed and complete when the instance is cleared.
Action – These missions are typically kill or hunt missions. They involve combat, usually with varying types of enemies.
Investigation – Research and Investigation Missions. Designed to make you solve puzzles or find solutions, usually with real world elements.
Sabotage – Missions with multi-part specific tasks. Usually involved collection, infiltration and destruction.
Side Quests - These are typical fetch or locate quests. These quests send you out to obtain a specific object. Allowed to have 3 at any given time.
PvP – Given out in the battleground / pvp zones. These include Caputre Objectives and Kill Quests.

Issue #7 'A Dream To Kill' Update Missions

Issue #6 'The Last Train to Cairo' Update Missions

Issue #5 'The Vanishing of Tyler Freeborn' Update Missions

Issue #4 'Big Trouble In The Big Apple' Update Missions

Issue #3 'The Cat God' Update Missions

Issue #2 'Digging Deeper' Update Missions

Issue #1 'Unleashed' Update Missions

Main Story Missions

Main Story Mission Guides / Solutions:

Faction Missions

Lair Missions

Dungeon and Boss Guides

Solomon Island

Kingsmouth Mission Guides / Solutions:
Savage Coast Mission Guides / Solutions:
Blue Mountain Coast Mission Guides / Solutions:

Egypt

Scorched Desert Mission Guides / Solutions:
City of the Sun God Mission Guides / Solutions:

Transylvania

Besieged Farmland Mission Guides / Solutions:
Shadowy Forest Mission Guides / Solutions:
Carpathian Fangs Mission Guides / Solutions: