"The new weight category has been easy to adapt. I have not faced too much difficulty. Obviously there are challenges of facing boxers who are coming from 64kg, given their power but nothing is impossible," Thapa, a 60kg category boxer before the rejigging of Olympic divisions, told PTI from Astana.\u00a0\u00a0 \u00a0Thapa couldn't make the cut for the September world championships after losing in the trials to Commonwealth Games silver-winner Manish Kaushik. Thapa had defeated Kyrgyzstan's Argon Kadiribekuulu 4-1 in the last-four stage bout.\u00a0\u00a0 \u00a0"Shiva had a great tournament, beating some really fancied opponents. It was an impressive performance," said India's High Performance Director Santiago Nieva.\u00a0Earlier, Sweety Boora (81kg) and Duryodhan Singh Negi (69kg) had ended their campaign with bronze medals following semifinal defeats.