0 0 0*** Spoiler - click to reveal ***After opening and going through the portal use the Flyer on the door. Then use the Unicorn on the door. You will get the Key.Go down into the dungeon and go to the locked door in the centre. It may take you several tries for surviving in the dungeon without a sword is difficult.Open the door with your newly acquired Key and follow the path to the top-right corner. You will see a man and stairs down.Simply go down the stairs and the go back up. You can explore the Level 2, but beware of a @ monster. It will easily kill you.If you managed to go back to Level 1 without dying, this achievement should pop up.