After your first visit to Hanubia, you go to the Ferenia E.M.M.I. Zone to destroy the purple E.M.M.I., also known as E.M.M.I.-06WB.
Reach the E.M.M.I. Zone
Go to the right to fall through some Pitfall Blocks, then go through the door on the left. Go to the left side of the room and Screw Attack through the floor on the left. There is a small gap in the wall on the right.
If you want to save, go down to the door on the bottom left and go through, then go to the left side of the large room and go through the middle door on the left to reach a save room. Then, from the save room, go through the door on the right to leave the save room, and in the large room, go through the upper right door, then Screw Attack upward to the small gap in the wall on the right.
Enter the tunnel and place a Cross Bomb. In the area above the tunnel, go to the right and shoot the door to open it. Go through. Go down to the area below and use the Grapple Beam to open the door on the left. Go through. Go down below and go to the right, and shoot a charged shot at the door to open it. Go through. Go to the right side of the room and place a Cross Bomb in the bottom right corner. Roll through the tunnel that appears, and place another Cross Bomb to open the rest of the tunnel. Go through. Screw Attack up through the ceiling, then grab the ledge on the left and drop down without Screw Attacking. Then hold R to lock onto the five green dots in the ceiling and walls. Press Y to shoot the five dots and destroy the Storm Missile Box. Go to the right, past where the Storm Missile Box was, then Screw Attack down to the bottom of the area. Go to the right and Screw Attack upward, and you will reach an E.M.M.I. Zone Door. Go through.
Ferenia E.M.M.I. Zone
This E.M.M.I. will shoot an electrified bubble at you if it sees you, which will temporarily stun you if it hits you. You can use Phantom Cloak after being seen, to unlock E.M.M.I. Zone Doors.
In the E.M.M.I. Zone, go down and to the right until you can start going up through the room. At the top, roll into the tunnel on the right and you will fall through Pitfall Blocks in the next room. Use Phantom Cloak if needed, and when you reach the bottom, go to the right. Jump up onto the ledge above you, then make your way up to the upper right, where there is a red thing in the wall. Quickly shoot it, then quickly shoot the red thing in the top of the wall on the right, then go to the right and down, and shoot the red thing in the wall there. Go right and quickly Screw Attack up to the top, and roll into the tunnel there. Go through the door on the right to reach the Central Unit.
Ferenia Central Unit
There will be three laser turrets to dodge and three turrets shooting rings. Shoot the Central Unit with charged shots and/or missiles until its outer plating is destroyed, then Screw Attack into the brain to kill it in one hit.
Hold L and Y to destroy the door's heat shield, then hold L and R to charge up the Omega Cannon, and press Y to shoot the door and open it.
E.M.M.I.-06WB (Purple E.M.M.I.)
Leave the room, and in order to proceed, face the left wall, then hold L and R to charge up the Omega Cannon, then press Y to shoot the red thing in the wall. This will lower the raft. When it reaches the bottom, roll into the tunnel on the right, drop a bomb to open the path to the Morph Ball Launcher, and get into the launcher and drop a bomb to activate it.
At the other end, go to the left and shoot at the dead end to open a tunnel, roll into it and place a bomb to break open the path. Go to the left while charging your regular beam and shoot a charged shot at the box on the left to get it out of the way. Then go up and shoot charged shots at the wall on the left to break it open. Then get up on the ledge above that, and go the right and shoot at the dead end to open a block. Place a cross bomb there. Go to the right and shoot charged shots at the red thing in the wall, then slide through the tunnel that is revealed. Shoot a charged shot at the box on the right to knock it back. The blocks on the right are Pitfall Blocks, but if you stand just to the left of them and turn to face the E.M.M.I., you should have time to hold L and Y to destroy the heat shield on the E.M.M.I.'s face by aiming through the tunnel on the left. Then when you destroy it and stun the E.M.M.I. you can either go to to the right to fall through the Pitfall Blocks, and go again along the path that you first went along, to return to the place just to the left of the Pitfall Blocks, and stand there to hold L and R to charge up the Omega Cannon, then aim at the opening of the tunnel, where the E.M.M.I.'s head will emerge and you can more easily aim at it when you press Y to shoot the charged Omega Cannon at its head.
You will acquire the Wave Beam. It replaces your normal beam. It goes through walls and opens purple covers on doors.
Return to Hanubia
Go to the upper right of the area and roll through the tunnel there, then make your way to the upper left, where there is a door with a purple Wave Beam Cover. Shoot it with the normal beam, then go through. Now that you have the Wave Beam, you can shoot the red thing in the wall at the upper left. Just shoot normal shots at it until the path is opened. Then shoot through the wall at the creature that is shooting flame. Then go through the tunnel at the top, and go through the E.M.M.I. Zone Door on the left.
Stand on the glowing panel to save the game, then shoot the door on the left and go through. Go up and to the left, and shoot the red thing in the wall to open the path to the elevator. Use the elevator to return to Hanubia.