Words derived from the tasks performed by Herculeus

•  Herculean task : Heracles, the son of Zeus, had to perform 12 tasks as a penance for killing his family under the spell of Hera (Zeus' wife). These tasks required feats of super human strength. [Meaning : needing great strength and determination]
• Cleaning the Augean stables : The stables of king Augeas in Greek mythology where 3000 oxen were tethered were in a terrible mess. The phrase ‘clean the Augean stables’ has come to refer to the task of removing the accumulation of different sorts of corruption.
• hydra headed : In Greek mythology, the Lernaean Hydra was an ancient nameless serpent-like chthonic water beast (as its name evinces) that possessed many heads — the poets mention more heads than the vase-painters could paint, and for each head cut off it grew two more — and poisonous breath so virulent even her tracks were deadly.The Hydra of Lerna was killed by Heracles as the second of his Twelve Labours. [meaning : containing many problems, difficulties, or obstacles]
• Promethean : He was a champion of mankind, known for his wily intelligence, who stole fire from Zeus and gave it to mortals.Zeus then punished him for his crime by having him bound to a rock while a great eagle ate his liver every day only to have it grow back to be eaten again the next day. His myth has been treated by a number of ancient sources, in which Prometheus is credited with – or blamed for – playing a pivotal role in the early history of mankind. [Meaning : creative and boldly original]