Metroid Fusion (GBA) - Part 30: Nothing Else Matters
NOTE: Parts 30 and 31 of this playthrough are post-game commentary. I had recorded Part 31 before this one due to a big mistake on my part, which I explain in this video.
Samus finishes her collect-a-thon through the B.S.L. by getting what's left in Sectors 5 and 3. Sector 3 is the place to go though, because there are two Energy Tanks waiting for her, and neither one of them are difficult to get. The first one requires a simple Shinespark technique to reach it, whereas the second one resides in a fiery area filled with flame enemies and lava. There are also a few Power Bomb and Missile Tanks to collect in Sector 3 as well. Then Samus goes back to Sector 5 to reach an area where a Missile Tank awaits her at the top. All in all, make sure you get at the very least the Energy tanks so you'll have more than enough for the final battle in the Main Deck.