Finally achieved something on any of my DS Games. P:
I have 5 Pokemon Games (Diamond/Pearl/Platinum/HeartGold/SoulSilver), and Kirby Super Star Ultra. P:

So! When I did the Main Games in Kirby, I had done "The Great Cave Offensive" rather quickly, which actually affected my 100% Completion. In other words, only managed to get about 34/60 Treasures. And just today, I found the others.

I tell you guys. The TRUE Arena is difficult. VERY difficult. Not just Marx Soul giving you an Ear Rape, when you kill him; but due to Galacta Knight! He's like a White-version of Meta Knight, but has slightly improved attacks. Seriously, that boss is a BAMF.

Also, going through Milky Way Wishes is also difficult, because you need to find all 19 Copy Essence Deluxes.

Helper to Hero is also difficult, because there are 14 bosses, that the Helpers have to fight. Personally, the only Helper that is completely invincible when you press either the L or R: Tac. He has the Copy Ability. But in Helper to Hero, he has a Hand Cannon. Which is a quick-striking attack. 8D

So yeah, that's pretty much it. :3