1st Omega Metroid

Walkthrough: Head through the first room you come to in Area 7. There will be three different paths that all lead to the Save Station left, that same that will have an Aeion Path directly above it. Move along the path on the left to reach the Chozo Seal, and then enter the room on your left. Screw Attack going upward, crushing blocks and defeating machines as you do. There should be a Power Tank near the Teleportation Statue you come to, as well as a Save Station and Energy Recharge Station nearby. In the next room will be a Aeion Recharge Station, and in the following tall room will an Ammo Recharge Station. In said tall room, enter the door on the left and use your Screw Attack to get through the flora. The door at the end contains the first Omega Metroid of Area 7. Defeat it.

Missile Expansion #1: Get to the top of the first room in Area 7, and then shoot a Missile at the weak spot on the right of the Aeion Station to reach the Expansion.

Missile Expansion #2: After defeating the Metroid, enter the previous room and go through the hallway above. Bomb the weak spot of the path, waiting for the wall-fire to stop before proceeding. The Expansion will be near the end of the path.

Super Missile Expansion #1: Go through the middle path of the first room in Area 7. Bomb the weak spot on the center wall, and the use your Spider Ball inside. Use your Phase Drift and then Bomb the first two blocks. Quickly grab hold of the ledge and send a Missile at the third block, revealing the Expansion in sight.

Super Missile Expansion #2: Enter the room to the right of the Ammo Recharge Station and then Spider Ball against the left wall. Use a Power Bomb to blast yourself to the right, launching you to the wall on the other side of the room. The Expansion will be near the poison flora you find.

Power Bomb Tank: From the Teleportation Statue surrounded by red crystals, run all the way to the left and drop down between the next set of crystals. Roll into a ball and use your Power Bomb to shoot yourself upward. Grab the wall with your Spider Ball, and then move to the left wall and center yourself. Place another Bomb to launch yourself all the way to your right, which is were you can find the Tank.