After the two aptitude tests, there were few employee interaction sessions. I am not sure whether anything was assessed there (candidates were allowed to ask questions)
Next was a case study where a situation is given and you have to find a solution to it, in your group.
It was followed by a group discussion.
Later, there were two interviews: In the first one I was asked puzzles, few technical questions based on Java, few questions related to my Projects and points mentioned in my CV. Also some general questions were asked by the HR employee.
The next interview was more technical and and more questions about my project were asked.