One of the greatest things about the film is the twisting of the myth, it turns Hercules into a team of fighters (Herc at the front) who perpetuate a myth to strike fear into opponents. Not only that but his mythological opponents are likewise faked, either through people in suits or pure exaggeration.
Whilst angrier or stuffier reviewers may get stuck in the generic nature of the film and action comedy is what it is, this doesn't get caught up in pretension or recreating the wheel, it relies on fairly strong acting and tongue in cheek. If you don't want to watch Hercules you probably wont enjoy it. If your tempted you're going to have a good time.