This shows a quick return to the stages of Chill Penguin and Boomer Kuwanger to obtain the last two heart tanks needed for 100% completion. For Chill Penguin's heart tank, you need Fire Wave to break open the igloo.
For Boomer Kuwanger's stage, setting aside the immense time investment in obtaining the heart tank without any weapons at all, you'll need either Boomerang Cutter to snag the heart tank, or you'll need charged Shotgun Ice to help you get up on the platform. Both methods are shown:
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