The Hidden Secrets pack was released piecemeal at launch as pre-order incentives at various retailers.
The pack was released on December 4 for those who purchased the Season Pass, and was released at the turning of the new year for everyone else.
Single Player Missions
The pack contains the following missions:
Lost Mayan Ruins
This mission takes Connor deep into the heart of Central America, where a host of ruined Mayan cities holds the key to a new mystery.
Ghost of War
This mission has Connor chasing down the past in an intense fight for survival.
A Dangerous Secret
This naval mission has Connor engaging enemies at sea in exchange for a powerful secret.
All three missions offer weapon rewards.
Two single player skins are offered up here.