What were 3 punishments Tartarus did to torment the sinner?

Answer 1

There weren't just three punishments, but three were documented. You are thinking of the most famous of Tartarus' residents (aside from the Titans): Sisyphus, Tantalus and Ixion.

Sisyphus was assigned to endlessly push a boulder up a steep incline. He was told his task would be finished when he reached the top, but before he could, the boulder always slipped out of his hands and rolled to the bottom.

Tantalus was made to stand in a pool of water with a grape vine nearby. Anytime he went to eat, the grapes moved away. He was made to stand in a pool if water for ever, he was unable to drink, and with a fruit tree just in his reach he was unable to eat. Any time he went to drink, the water ebbed away. Additionally, there was a large boulder placed above his head, so he couldn't move away.

Finally Ixion was strapped to a flaming wheel that never stopped moving.

Traditionally, though, anyone who did more evil than good would spend an eternity punished in Tartarus.