This could have a pass based on the 3D but, in all honesty, the script and the story is totally senseless and unconnected. The travel through the Underworld maze to the Tartarus is just the best example of how bad the story is. In addition, they just mix the Greek mythology in the most absurd ways, putting a minotaur where it doesn't belong.
Make up is quite bad. Specially with the beards and appearance of the gods.
Andromeda, who is also misplaced and doesn't really have any relevant role, is the spark to remark, played by Rosemund Pike.