After a brief HR talk and passing the written assessment exams (Analytical, Verbal and a behavioral), was called for a face to face interview (had a total of 5 rounds - 2 Behavioral and 3 Case interviews).
Behavioral was fine (just "Did you ever face this issue and if so what you did" type of questions - total 6 questions (3 with each interviewer).
Case Interviews - all 3 were very similar with minor changes and all were very math oriented.
Prepare well for the case interviews by going over the book "Case in Point" - freely available to read online. Although it will not be the same, it will bring you to the mind set of how to approach these case interviews.
And the entire F2F interview was not hard- but definitely grueling.