Professional Mode
Complete the game, then press Up or Down(2) at the title screen. An option for professional mode will appear below the “New Game” selection. In this mode, your character has no magic and regular monsters are twice as hard to kill.
Extra Lives
Extra lives may be obtained by creating a rainstorm over the lake east of Bloodpool, discovering that the pyramid causes an earthquake in Kasandora and striking the Northwood Temple with lightning.