Khadka became the sixth Nepali cricketer to score an international century, when he hit an unbeaten 106 off 77 balls against Kuwait during the 2012 ACC Trophy Elite in October 2012.

[14] Born in Kathmandu, in 1987, Khadka first represented Nepal at the Under-15 level when he played in the Under-15 Asia Cup in the United Arab Emirates in December 2002.

[15] Nepal won the tournament after beating Malaysia in the final,[17] thus qualifying for the 2006 ICC Under-19 Cricket World Cup in Sri Lanka the following February.

Nepal won the plate tournament in the World Cup, beating Test-playing nations New Zealand[18] and South Africa[19] along the way.

Returning to the senior side, Khadka went on a tour of Pakistan before playing in the 2006 ACC Trophy in Kuala Lumpur.

He also played all four ACC Premier League matches against Hong Kong, the UAE, Singapore and Malaysia that year.

[23] In May 2012, he went to play for the Ontario Cricket Academy and Club in Canada for a four-month spell through the efforts of his national team coach Pubudu Dassanayake.

[24] In 2012, Nepal won the 2012 ACC Trophy Elite title in the UAE, where he scored a total of 291 runs at an average of 72.75[25] and picked up 9 wickets.

[53][54] In the fifth and final match of the ICC World Cricket League Division Two, he bowled his 7 overs spell of 0/16 in the game and got out in the very first ball.

In the final match of 2018 ICC World Cricket League Division Two against UAE, he scored 112 * runs off 103 balls with 8 sixes and 3 fours in a losing cause.

[58] On return to Nepal, he praised the performances of Sandeep Lamichhane and Karan KC in the last league match against Canada.

[64] In October 2018, he was named the captain of Nepal's squad in the Eastern sub-region group for the 2018–19 ICC World Twenty20 Asia Qualifier tournament.

[65] In the third match of Nepal's tour of the United Arab Emirates, Paras became first Nepalese batsman to score an ODI century at Dubai.

[66] In June 2019, he was named as the captain of Nepal's squad for the Regional Finals of the 2018–19 ICC T20 World Cup Asia Qualifier tournament.

He explained that he wanted a new way of taking things forward with a fresh start and committed vision, with everyone involved, following the reinstatement of the Cricket Association of Nepal.

With this signing, Khadka became the 3rd Nepalese cricketer to play in a foreign franchise league, after Sandeep Lamichhane and Sompal Kami.

I'm hoping to see the Nepalese flag flying high in the stands of Zayed Cricket Stadium when I play next month."

Trevor Bayliss, head coach of Team Abu Dhabi, referred to him as an impressive player who excelled in short forms of the game, and both his batting and bowling prowess made him a threat to the opposition.

[72] The Nepal team won the bronze medal, after they beat the Maldives by five wickets in the third-place playoff match.

[80] He led the boycott of national league for the second time in April 2014 demanding the restructuring of Cricket Association of Nepal and better facilities for players.