On Sunday the Kumuls crushed the US Tomahawks 64-0, after earlier beating Wales and Ireland to be on top of the log in Pool C of the RLWC.
This coming Sunday, the Kumuls come up against England in the quarterfinals, a team which has beaten both Lebanon and France.
Prime Minister Peter O'Neill probably summed up the sentiment of PNG: "The whole country is with you in heart and mind as you prepare to take on England in the quarterfinals.
"You have demonstrated your professionalism on the field for a spectacular result," O'Neill said, referring to the victory over the US.
In their defeat of the US Tomahawks, the Kumuls posted their highest-ever World Cup total, scoring at almost a point a minute in the opening half as their attack punished the United States' defence, crossing the line on 13 separate occasions.
O'Neill added that the game against England would be tough "and we know that you will give it your all as you prepare for the game".