The 21-year-old winger again cut inside and shrugged off the challenges of Galbraith, Michael Hart, Bamba and Liam Miller before tucking a cool right-foot finish low past Brown from just inside the penalty box.
But Warrington were level 14 minutes later when Michael Monaghan's deft pass fed Anderson, who shrugged off the challenge of Lee Briscoe to touch down from close range, with Chris Bridge adding the extras.