Ubisoft has delivered a pair of multiplayer-focused DLC packs so far for Assassin's Creed: Revelations, but a newly listed set of Achievements at Xbox360Achievements.org suggests that the next content release will focus more on the solo play portion of the game. The 10 new Achievements, listed under the heading "Unknown," all seem indicate more of a story and/or puzzle focus for the unannounced content.

Perhaps the most telling hint is a Cheevo called "Impress Warren Vidic," a reference to the Templar and head of research for Abstergo Industries. You're awarded 50 GS for getting that one, after you "Complete the Animus testing sequence without failing." Hit the jump to check out the full list.

• Part of the Creed (10 GS) - Take the induction leap of faith
• Jump they say (10 GS) - Reach the Animus memo
• Enter the Animus (10 GS) - Enter the Animus simulation  
• Meet your maker (10 GS) - Finish memory five
• Find all Pieces (50 GS) - Find all decipher fragments
• Save yourself (10 GS) - Land on a block after falling more than 25 meters
• Impress Warren Vidic (50 GS) - Complete the Animus testing sequence without failing
• Cross Styx without dying (25 GS) - Make it across the river Styx without failing
• (SECRET ACHIEVEMENT) The Loop (25 GS) - Experience the loop
• (SECRET ACHIEVEMENT) Breaking the Loop (50 GS) - Break the loop, escape the cycle

Source: Xbox360Achievements.org