Speaking to RFI, Rui Sampaio admitted that the angolans do not have an easy life.
The coach also considered that the match translates into a final, since the national team has to win to stay in the race.
Angola's first game in the competition was against Japan, with whom they lost 4-8. Paraguay, on the other hand, was defeated against Spain (0-4).
Still without points, the 'Palancas Negras' have to win Friday's game to stay in the competition.
In the championship, the first two teams in each group win a direct passport to the next phase of the competition. The four best third-placed teams in six groups will also qualify for the round of 16.
The Angola-Paraguay match will take place in the Klaipeda Arena, in Lithuania, at 6pm.