Franco Nero, who seemed such a dull stick in Camelot, takes on a very different and more appealing complexion here as a Polish gunman on hire to anyone who will pay his rates in Mexico early this century. His speciality is keeping his cool when all around are losing their – which they do rather frequently in this Italian western (director, Sergio Corbucci) with its full quota of sadistic bloodletting and perverse passion. At least it is constantly lively, and a sight better than the more famous (if not infamous) works of Sergio Leone, who started the cycle off with A Fistful of Dollars.
John Russell Taylor, Thursday Nov 27, 1969. The Times