Your Speed Booster should activate right after you go through the blast door. Once you get to the flat part of the room (this will line up to where the dot on the left side of your map is), start running and shooting. I usually try to write these guides in a “the way the game intends you” kind of way, but this one is easy enough, so it’s up to you whether you want to do this or not. Once you’re back in Brinstar, head left into the hallway we fought Deorum in earlier.We can actually get an important item here much earlier than the game intends for us to. Here you’ll find the location for every Super Missile Expansion in Metroid: Zero Mission, as well as detailed explanations on how to get them and what powerups you’ll need.
