Doom escaped from hell because he was dissatisfied with the rule of the demons and opposed them. Doom was a hellish soldier who participated in the wars between hell and the material world, but he hated the violence and injustice of the demons. Doom decided to flee from hell and seek redemption. Doom managed to reach a gate that led to the material world with the help of his abilities and some of the inhabitants of hell. Doom crossed the gate and found himself in the heart of a war between Radiant and Dire in Dota 2.
