How do you get past the arena on Kirby superstar ultra

You have to beat 13 or more bosses, including Marx. After you complete the next game, Helper to Hero, you will get to the final game, called the TRUE arena, where you beat the new bosses like the all new mid boss all-stars, Mr. Tick Tock, Fire Lion, Grand Wheelie, and Phan, Phan. You also get to beat Whispy's Revenge, Lololo and Lalala's Revenge, Kracko's Revenge, and Masked Dedede. You will beat Wham Bam Jewel, similar to Wham Bam Rock. Then Galacta Knight, and then remember Marx in Milky way wishes? Well he survived as Marx Soul and he will be tougher. After Kirby gives the final blow, Marx soul will scream a horrifying death scream, break in half, and explode. you have beaten the full game!