Get 40,000 gold then purchase 2,000 tokens. Once you have done this go save your game then start playing the 100 token slot machine, it will be the red one standing alone. start off putting just 100 in each slot trying to land either 777 or 4 watermelons. If you run out of tokens turn off the game and reload the save. Once you hit either of those or higher resave and play again and you can start putting 300 in each slot for big winnings. Using this strategy I got 2 Metal King Swords and some Falcon Earrings in 2 hours <img src="http://i.neoseeker.com/d/icons/bigsmile.gif" border=0 vspace=2 alt="" />.
Do not bother using peep at all to verify chests to avoid mimics, once you kill the mimic it drops a chest containing a mini-medal! Also there are monsters who will very rarely drop a mini-medal. Once you have to go to the cave by Gotha to retrieve the royal insignia you will encounter monsters named Admirer which morph into copies of your own monster team. Killing them gives you a slight chance for them to drop a medal so train there when you level up because they also give 1,100 xp per kill since they often come in pairs.