Play Demo Level
Set the difficulty level to Hard, then enter BJQX TRKC DLSZ as a password.

View Ending Credits
Enter MTKM SKTK HNSH as a password.

Start on Last Stage with 38 Lives
Enter MFMJ TVSY FVPX as a password.

Fight ActRaiser Boss
Enter Xxxx Yyyy Zxxx as a password.