The interview process is the same as all the other consulting firms with one resume interview, and two case solving interviews, and one final managerial interview. The case solving interviews are both pricing cases and both are done in one session.
During the resume interview they will go through the CV and cover letter that you sent to them and ask occasional questions regarding the positions and experiences that you mentioned there. Occasionally they ask about specific examples on each experience that you have added. Also the general questions regarding the weakness and strength are included. What I got from the process that the interviewer was mostly looking to my facial and body gesture in respond to each questions to understand whether I remain calm or got stress. My recommendation is honesty. If you have sent an honest and real CV and cover letter and give the real examples from your experiences, you will easily pass the resume interview.
Although the case interviews were about pricing cases, but having pricing knowledge is not mandatory for that. The cases are designed in the way that mostly assess your analytical skills as well as problem solving and presentation skills.