Apple of Wisdom
After you find the Apple of Wisdom in the first area, keep it for a while. Buy some Duplicators from Merchants. Make copies of the apple and use them on your characters. Be sure to keep one apple to give to the Witch Doctor which asked for it to receive your first piece of the Dragons Amulet. Note: This is only for the Viking Quest.
Finding treasure
Save the game before using the Copper Mirror of the Mage. Use the Mage to find all hidden treasure on current board. Next, load the saved game. You will now know where the treasure is located, plus you will still have the Mage. Use the shovel to get the treasure. This will allow you to find hidden treasures on all boards using the same Mage.
Using high attribute armor or weapons
To use armor or weapons that require a higher attribute, place rings, amulets, and any armor or weapons that you have on other characters with the required attributes needed onto your character. You can now use the item in red. You can then replace all rings, amulets etc. to their original locations. You will still have the item in place, even though you no longer meet the requirements.