Metroid Fusion - Fighting Nettori and Yakuza Early

This video is tool-assisted. http://tasvideos.org/

Using tool-assistance, it's possible to get to Nettori and Yakuza early before fighting Zazabi. It's actually necessary to go through Nettori's room because it temporarily clears the vegetation and allows me to get to Yakuza. You only have to leave the room (the door isn't locked), but I decided to show the whole fight. Also, entering certain doors around Nettori will cause the vines to come back again. The quick pauses in the video are for luck manipulation (to get the eye door to open and for Yakuza to open its mouth right away). I bomb jumped my way out of the room to show that killing Yakuza doesn't change anything.

Unfortunately, the game doesn't let you do things out of order, and you don't get the plasma beam or space jump. Instead, it tells you that you've unlocked whatever the last level of doors is that you've unlocked. This does not screw up the game, however, as you can continue playing normally and come back to Nettori and Yakuza later. Bosses beaten early will always respawn until you beat them at the intended time.