The DLC for this game is complete mess.
The claws are out, they are free for story mode, you can download the compatibility pack for free. But to use them in the Ninja Trials and online modes, you need to buy a 2nd pack for 240MS points. Then there is a Ninja Lite pack that includes some new unlockables for the multiplayer, and a few of the new trials.
There's also a pack for each of the new trials for every difficulty.
All in all there are like 6 different packs that divide up 10 new Ninja Trials, claws for the story and multiplayer, one new stage for multiplayer, and some new unlockables.
What, really? Holy shit Japanese developers/publishers whatever, have no idea how too handle DLC.