Like in past Kirby games, there is a hidden HAL room to find near the end of the game. Before going through the shiny star door in the very last room, fly up toward an "X" shaped hole in the background. You will see a tiny bright yellow star in the far-off space. Press [Up] to enter the HAL Labs room. The room contains many power-ups, and there is a large "HAL" written in blocks. Grab the Festive Dance enemy and use the super-power to smash all the blocks at once, summoning another set of HAL blocks with extra lives and other power-ups.