Here is the full list of all 26 Rogues or Heroes achievements.
Become a legend. (Challenge)
Become a hero. (Challenge)
Vanquish the king. (Challenge)
Vanquish the boss of the cemetery. (Challenge)
Save all the survivors. (Challenge)
Vanquish the boss of the ogres' swamp. (Challenge)
Vanquish the boss of the traitors' prison. (Challenge)
Vanquish the boss of the outcasts' forest. (Challenge)
Vanquish the boss of the town's ruins. (Challenge)
Vanquish the boss of the frozen plains. (Challenge)
Vanquish the boss of the catacombs. (Challenge)
Vanquish the boss of the mages' tower. (Challenge)
Become evil.
Become a legend.
Become a hero.
Vanquish the king.
Save all the survivors.
Vanquish the boss of the frozen plains.
Vanquish the boss of the traitors' prison.
Vanquish the boss of the outcasts' forest.
Save 5 survivors.
Vanquish the boss of the ogres' swamp.
Vanquish the boss of the town's ruins.
Vanquish the boss of the cemetery.
Vanquish the boss of the catacombs.
Vanquish the boss of the mages' tower.