Use the following trick during the Rite Of Courage to get some extra honor points. While in the skull area on the map where the gate to Hades will open, click on the body of the dead guard and select "Bury The Body." You will not be able to, but you will get some extra honor points just for trying.
Park the balloon outside Silmaria after it has been completed, then restart the game.
Hold G + K until your character's stamina is expended. Then, rest for an hour and repeat.
Throw an item, including coins, into the air. Press I while the item is in mid-air, select the same item, then throw it in the air again. Repeat to duplicate the selected item.