Click Start to begin. Use the letters provided to make words and then click the Make Word button. You will hit the monster for the total of your swords damage minus the monster's shield. The monster will hit you for the damage listed, hitting your shield first and then you. When your hp goes to zero, you lose.
If you can make a word that is six or more letters, you have a chance to get a point of dexterity and/or strength. More dexterity will add to your shield and more strength will add to your sword.