At the beginning of Stage 5, during the intro when Lammy is panicking, she will make a face similar to that of "The Scream", and art piece created by Edvard Munchs.
There are two versions of the 6th stage. In the Japanese and PAL versions of the game, the stage takes place in hell. In the American version, the stage instead takes place on a volcanic island. Both stages have different graphics for Lammy, a different intro cutscene, and a slight change in lyrics in the first stage to remove any references to hell or the devil.