To fight a boss from the original ActRaiser, enter the password "XXXX YYYY ZZZZ."
Enter the password "MTkM SkTk HNSH".
This password gives you 38 lives and takes you to the last level of ActRaiser 2. At the Password screen, enter "MFMJ TVSY FVPX."
Play the Intro
To play in the game's intro, set the skill level to HARD and enter the password "BJQX YRKC DLSZ".