Lord of Magna: Maiden Heaven - Secret/Hidden Achievement (In-Game)

There are three (in-game) "Secret/Hidden Achievement" and here are how you get them.

Good Listener

• http://lordofmagna.wikia.com/wiki/Item_Trade (read the information)
• Hidden third last achievement? 
• How to craft Innocent Wish

Reliable Friend

• http://lordofmagna.wikia.com/wiki/Item_Trade (read the information)

Beat the Frenzy

• beat the final boss in the last chapter (main story)