Originally Posted by The BiggD
Looks like there will be 4 Multiplayer-based achievements as part of the Battle Hardened DLC Pack.
Individual DLC cost/Gamerscore/Release Date has yet to be released.
The Battle Hardened Pack comes with the Assassin's Creed III Season Pass, which is currently available on the Xbox Live Marketplace for 2400 Microsoft Points ($30).
One for All
— With any of the additional characters, perform 20 ‘Revive’ actions.
A New Challenger Appears
— Finish a multiplayer game session with each of the additional characters.
— Stun 3 pursuers without dying, playing with any of the additional characters.
Wolves for Lambs
— Complete a Wolfpack multiplayer session on any of the additional maps
this is exactly why i haven't gotten the season pass. MP is cool and all, but the SP is really where it's at, and where, IMO, the attention should be payed.