Rew scored the first points of the game to get the crowd up on their feet roaring as he shrugged off several defenders to score.
The Solomon Islanders responded straight away via Solly Seuika to score out wide.
A successful conversion put his team in front.
Some razzle dazzle rugby saw Rew grab his second score of the match right after the half time siren sounded. With the kick in, the score was 12-7 at the break.
The second half belonged to PNG as two more tries went to Arthur Clement and Butler Morris just on full time.