This game actually gets easier and easier as you go further down. Also the shopkeeper itens were 90% of the times better than those I found.
TIPS: 1) Ignore magic, and defense. Go pure brute force. It doesn't matter if you have low defence if you kill your enemies on the first strike.
2) Save your MP for using heal.
3)Just kill the enemies you have to, and ignore money bags.
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