The visitors took the lead in the 13th minute through Brahima Doukansy but Assifuah managed to draw his side level before the break.
The 27-year-old put the ball at the back of the net on 38 minutes for the equalizer.
Pau FC were spurred on and were 3-1 up by the 80th-minute courtesy Cheikh Sabaly's brace.
Substitute Romain Armand sealed the big win an injury-time goal. Read Full Story