Renny Harlin said that he chose Scott Adkins for the role of King Amphitryon because of "his acting skills, his incredible physical ability and his incredible physique". He said that King Amphitryon "had to be the biggest badass the audience had ever seen and only Scott Adkins fit that bill".
Director Renny Harlin mandated that all the male actors shave their legs along with their torsos because the film was being shot natively in 3D and he said that hair stuck out when you shot with stereoscopic cameras.
Slay the Nemean Lion.
Slay the nine-headed Lernaean Hydra.
Capture the Golden Hind of Artemis.
Capture the Erymanthian Boar.
Clean the Augean stables in a single day.
Slay the Stymphalian Birds.
Capture the Cretan Bull.
Steal the Mares of Diomedes.
Obtain the girdle of Hippolyta, Queen of the Amazons.
Obtain the cattle of the monster Geryon.
Steal the apples of the Hesperides (He had the help of Atlas to pick them after Hercules had slain Ladon).
Capture and bring back Cerberus.