As TW holds it's reputation for being one of toughest technical company to get in, it held 100% true for me too. But I ended up making into TW at last. They visited our campus on sept. 2 2013. Their process started with 2 coding rounds as entry level filters. After that they happen to shortlist some 7 students out which I was the only who was finally offered a job.
After first 2 coding rounds, there were 2 technical interviews followed by 1 logic test and 1 general aptitude test and the last 1 was HR interview. Each interview was almost 1 hour long. Even after getting through all those rounds mentioned above I was called for one more round of logic test on next morning. But soon after my logic test was done. HR guy from TW told me that they had decided to take me in.