There were 5 rounds and around 60 students first round was Aptitude in which only 20 were shortlisted the minimum passing criteria was 60% in aptitude.
Second round was GD, after GD only 10 students where short listed, then after a technical+hr round in which 5 were short listed and then we had to go to the company for our final technical round after 5 days , then they took our final round and finally 3 were selected and I was one of them. :)