Judas has fascinated me since I was a young child. In one sense, he was disloyal to Our Lord and offered Him for silver. On the other hand, he felt such remorse that he killed himself. Did he completely act out of Free Will or was his actions based on fufilling a prophecy? Fascinating biblical character.
Mark 14:21 (King James Version)
21The Son of man indeed goeth, as it is written of him: but woe to that man by whom the Son of man is betrayed! good were it for that man if he had never been born.
If he did not go to Hell. Christ would not declare this.
Christ ultimately sees him spiritually placed. Which is Hell. If he went to Heaven why declare better than being not born. I believe the answer lays in these words.
We don't know if Judas had that last moment of repentance. He might have made it into heaven. He certainly gave way to despair, didn't he?