Wonder Boy in Monster World

When you use an Inn it saves your game and you regain full magic and hearts. The first inn you come across is in the first town, Alsedo. It costs 10 gold to stay at this inn, so you need to have less than 10 gold to get the trophy. Walk further on past the inn and you will find a weapons shop. Enter and spend all of your gold (or at least only leave 9 or less). Then go back and enter the inn. Ask to stay and you’ll get the trophy!