Cold-Hearted Guardian (こごえる どうくつの ヌシ?) is the boss battle area in the Snowfall Field. In it, the player faces off against the Luring Slurker, which drops the Beneficial Intelligence. Completing this area grants access to the next sector, the Lushlife Murk.
When Frozen Hazard is completed, a cutscene starts, taking place inside the S.S. Dolphin II's cockpit, wherein the ship announces it found a treasure, but also an indigenous creature. After this chapter is completed, a similar cutscene takes place, but the ship announces that it discovered a sector filled with poison instead, the Lushlife Murk.
The entire area consists of the arena in which the player fights the boss. It is an enclosed room inside a cave, and it's floor is just one long wooden board, which spans roughly 2 screen-widths wide. The board is on the surface of water, and can raise and lower throughout the battle.
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