Archer came off the bench for Ireland Wolfhounds against England Saxons on 25 January 2014. He was named in the Ireland squad for the 2014 Guinness Series on 21 October 2014. Archer was named in the Emerging Ireland squad for the 2015 World Rugby Tbilisi Cup on 19 May 2015. He started in the opening 25–0 win against Emerging Italy on 13 June 2015. Archer started in the 33–7 win against Uruguay on 17 June 2015. He also started in the 45–12 win against Georgia on 21 June 2015, a win which secured the tournament for Emerging Ireland.