Charge Beam Search

Walkthrough: Exit from the previous area through the door on the left. A cut-scene will begin, and after it ends, continue to your left. You won't be able to do anything with the Chozo Seal, and you can't touch the purple lava. You'll quickly find the door you come to won't open, so jump to the ledge above and enter the next area.

Continue over the next statues, rolling into the mouth using your Morph Ball. Here, you'll find the Scan Pulse, the first of four Aeion Abilities Samus can learn. By using the D Pad, you can set the ability; by pressing the A Button, you can activate the ability. However, when activated, this will cost Aeion Fuel that can only be regained by collecting Aeion Orbs. You must activate it for now though, as you need to use it to break the blocks in the top left corner of the screen.

In the next area, you'll have to head right since you can't go very far to the left without your other abilities. A Metroid is near, so use Morph Ball to drop down. For here, go down to the Energy Refill Station and then roll to the left. You can't go up because you quickly get blocked by another door, so head left until you reach the next Save Station.

Head down from the Save Station and destroy enough of the rocks so you can squeeze through with the Morph Ball. By doing this, you will quickly find yourself in the next room, the same that contains the first and only Metroid in the Surface Area. It will quickly evolve into an Alpha Metroid, the second in its evolution line. Even though it's a Stage Two Metroid, the battle with it is pretty simple. It has the tendency to float around the top of the room before slowly backing up and then launching forward at you. A well timed Counter will easily stun it, allow you to get a number of shots each time. Missiles are its main weakness, and the squishy part on its body is its weakest point.

After defeating your first Metroid, going in the next room to refill your ammo. From there, jump onto the ledge and use a missile to break the red barrier around the next door (like before). Head inside to find the next Chozo Statue with the next Weapon. Shoot the orb once again, and then gain the Charge Beam. This weapon lets you charge standard attacks, which results in more powerful attacks. Use a Charge Beam to unlock the door directly in front of you to proceed.

Missile Expansion 1: Near the Energy Refill Station. Before falling down to the station, stay crouched and look to the right. Launch a missile to find the area to the upgrade.

Missile Expansion 2: Before going to the Second Save Station, use your Scan Pulse to find two weaker blocks to the left. Destroy them and go through the small area to find the next expansion.