I was browsing Youtube for AC Revelation Gameplays and I actually found a walkthrough that went a bit deep into the game. Not completed though. Heres the link to a part of the walkthrough.
There also seems to be new features to Revelations. You can now combine a primary weapon (sword, hidden blade, crossbow, for example) and a secondary weapon (bombs, hidden gun, throwing knives,etc.) together to your own liking! The HUD also appears to be more primative, probably oweing to the fact that the Animus is in its failsafe mode. It looks pretty good too!
Enjoy! Any comments are welcomed.