Quest for Camelot
Print intermission scenes
During an intermission scene, press Select to print it on a Game Boy Printer.
Obtain at least thirty jewels. When down to your last heart, save the game, then restart and load that saved game. Your hearts will be restored to full.
More money and energy
Use the shovel to dig at every location to increase your money and energy.
Maneuver a Boss against a wall, then keep hitting it with your sword