Begin your game as either a barbarian or hero (barbarian is easier because of all the hp). Head to the desert after your short background events are done. Avoid races and sandworms, enter the pyramid when you find it. Be sure to have full health
The first floor is usually right, left, left, right, right, but on occasion I've had it change up on me. If you get kicked out, the correct path will not change during a playthrough just keep going back in till you get to the end. Go to floor 2 and kill all 3 golems, move on and speak with the person in the pyramid until you can enter the last room. The genie's trivia answers are 13, tankard, and 3. Wish for power, a dragon, and set the genie free. Head back to the main road.
Next up is the snowy region. Find the cave, go in and use your super strength to get the sword out of the ice. Return to the main road.
Head to the cave on the main road, go to the deepest part and go up the stairs. Repeat this step until it takes you to Alluris undercity instead of the dwarven town in the mountains. Hang out in the undercity until someone offers to sell you a map. Buy it and head back to the road.
Head to the mountains, kill enemies until a new event with a waystone shows up. Follow your map from that stone to get to Baron Dreads hidden base. You will have to kill a few high level minions before you face him. When the fight begins, the soul sword gives you a now or never prompt. Pick 'now' and you will one-shot him with the soul sword. At the final prompt at his throne, the left option should be changed by you having the dragon from the genie, choose it and the dragon will melt the throne and the game will end, popping your achievement.