Ever since this got pulled some few hours after it was first released I've been looking for this DLC to come back.  Today is is now on Live and I've played the first five karma missions and one of the survival missions.  I was excited to see that is looked like all 24 missions take place in different locations in the game.  I did not experience any problems with the game and even earned my first achievement.

For $10 you get 24 new missions: 16 karma missions and 8 survival missions.  The karma missions are similar to the trails where you face one to many enemies and fight till they are all dead.  You are given a score and awarded a meddle based on that score.   In survival you're give one weapon and waves of baddies come at you till you die.  You are judged by how long you survived and how many enemies you killed.

Now it seems that these missions all default to acolyte and once they all have been cleared you can play them on warrior difficulty and this continues through all the difficulties.  I blew through the first four karma missions without breaking a sweat.  The survival ones may be a little more difficult but still an enjoyable game mode.  For any Ninja Gaiden fan this will be a nice pack to add some more life to the game.