Back when Castlevania: Lords of Shadow was on the way out, we learned that Kojima Productions was involved in the project. As far as I know, Kojima only made a few comments on the game and its direction. Nothing that involved getting real down-and-dirty with the game.

If you were wondering about Kojima Productions being involved with Castlevania: Lords of Shadow - Mirror of Fate, the answer is no. MercurySteam's Dave Cox has stated that Kojima Productions isn't involved with the 3DS title, or the console sequel to Lords of Shadow, for that matter. Thanks to Johnny4 for the heads up!