Chapter 1: Hi-Jump and Jumpball

This opening section of Metroid Fusion introduces the game's more structured and mission-based progression, with frequent guidance from Navigation Rooms. While the path forward is generally clear, many upgrades and hidden areas can still be missed without careful exploration. This guide helps you move efficiently while highlighting important items and avoiding common mistakes early in the game.

Make sure to check walls, ceilings, and floors for hidden passages, as many missile expansions and energy tanks are not immediately visible. Since Metroid Fusion is more linear than other entries, following Navigation Room objectives is important, but taking time to explore each area can help you find valuable upgrades early.

A common mistake in this section is rushing between Navigation Rooms without fully exploring each area, which can lead to missed upgrades. Another issue is not using missiles frequently enough, which can make certain enemies and obstacles harder than necessary.

Even though Metroid Fusion is more guided than other games in the series, it still rewards careful exploration. Look for subtle visual clues like slightly different textures or suspicious gaps, which often indicate hidden paths. Revisiting rooms after gaining new abilities can also reveal additional upgrades.

Navigation Rooms provide guidance on where to go next, but they don't always highlight optional upgrades nearby. It's often worth exploring surrounding rooms before advancing to ensure you don't miss valuable items.

After the opening cutscene, go through 2 doors on the left. Then go all the way up and take the door on the left. Continue through 2 more doors on the left. Use the console, then go left 1 more room. Then go all the way up and take the door on the left. Fall down and take the door on the left. Defeat the enemy and then return back to the Navigation Room.

After using the console, take the door on the right. Go up and take the first door on the right. Head through 2 more doors on the right. Then go all the way up and take the door on the right to find another Navigation Room.

Take the door on the right. Then go up and take the first door on the right. Take the elevator up. Head through the door on the left. In this room, jump up and take the door on the left to find a Navigation Room. Go left 1 more room to find the Data Room, where you'll get Missiles.

Go to the right and use the console in the Navigation Room. Go to the right 1 more room. Use the platforms to jump across the room. Then shoot a missile at the hatch. Go right 1 more room. Use a missile on the parasite, then continue dropping down until you find a Missile Expansion.

Go to the room to the left. Shoot the left wall to find a Missile Expansion.

Return to the previous room and then go right 1 room. Head to the right and defeat the Eyedoor. Progress through the room to find an Energy Tank.

Shoot the ceiling just above the gap to find a hidden tunnel. Go right 1 room to find another Energy Tank.

Return to the previous room and fall down the gap to encounter the first boss, Arachnus. His back side is protected and Arachnus can only be damaged with missiles.

After defeating Arachnus, continue hitting the X parasite with missiles until you can absorb the X, giving you the Morph Ball.

Using the morph ball, go left 2 rooms. Then take the door on the left to find a Save Station. Head through 2 more doors on the left. Then drop all the way down and take the left door to enter the Navigation Room. Take the door on the left. Then jump up and enter the small space to go to the room to the right. Here you’ll find a Missile Expansion.

Return to the previous room and take the door in the top left corner. Go through the small space just to the left and head through that door. Continue left until you find an elevator and take it down. After the cutscene, go left 1 room and take that elevator down.

Go right to reach the Navigation Room. After using the console, go through 3 doors on the right. Then take the bottom right door in this room. Then take 1 more door on the right.

Progress toward the right side of the room and then use missiles to destroy the X parasite here. Then take the door on the right. Enter the small space toward the right side of the room to find an Energy Tank.

Continue through the door on the right. Drop down and take the first door on the left. Proceed through 1 more door on the left. Fall down in this room and take the door on the right. Continue through 1 more door on the right. Go to the right side of the room and use missiles to destroy this X parasite as well.

Head through 3 doors on the right and destroy the X parasite in this room with missiles. Take the door in the top left corner of this room to find a Missile Expansion.

Return to the previous room and take the door in the bottom right corner. Go all the way up and take the door on the left. Continue through another door on the left. Run to the left side of this room and shoot the upper left wall to find a hidden small space. Use the morph ball to go through and take the door on the left.

Defeat the Eyedoor in the top left corner of the room and head through that door. Shoot the Chozo orb in the bottom left corner of the room to begin a battle with a parasite. Hit the vulnerability spot with missiles until the shield is broken. Then absorb the X to get the Charge Beam.

Head through the door in the top right corner of the room. Continue through another door on the right. Then use missiles to destroy the X in this room. Run through 2 doors on the right. Then go up and take the door on the left. Go up in this room and take the door in the top right corner of the room.

Progress to the top right corner of this room and destroy the X parasite here. Return to the previous room and take the door immediately to the left. Continue through 3 more doors on the left. Take the top left door and continue to the Navigation Room to use the console.

Head left and take the elevator up. Go right 2 rooms and then take that elevator down. Run right to find the Navigation Room and use the console. Go right 3 rooms, then take the top right door in the large room. Continue through 1 more door on the right. Go all the way up in this room and take the door on the left. Fall down in this room and step on the switch to activate the blue hatches.

Go through the door with the blue hatch. Drop all the way down and take the door on the left. Continue through another door on the left. Then fall down and take the door in the bottom left corner of this room. Continue through another door on the left. Go through the top left door in this room to find the Data Room with the Morph Ball Bomb.

Return to the previous room. Use bombs along the upper right wall in this room to go through a small space, where you’ll find a Missile Expansion.

Return to the previous room. Then go to the bottom left corner of the room and use bombs to fall through the floor. Take the door on the left. Jump up in this room. Then use a wall jump and shoot the upper left wall to find a hidden small space. Use a bomb in the middle of the floor in this area to raise a platform, allowing you to reach a Missile Expansion.

Go back through the small space. Use bombs and the morph ball to head all the way down in this room and take the door on the left. Fall down and take the door on the right. Use a bomb in the middle gap of this room to fall through. Then head to the left and fall through the pitfall blocks. Run to the right, before jumping onto the small ledge, use bomb in the bottom right corner, revealing a hidden small space. Use another bomb at the start of this small space to fall down and find a Missile Expansion.

Go back up through the hidden small space. Then use a bomb to go through the small space on top of the small ledge. Continue through the door on the right. Progress to the right in this room, using a bomb on the floor to raise a platform. Take the door on the right. Go up in this room and take the 2nd door on the right. Head through 4 more doors on the right to find an Energy Tank.

Shoot the floor in this room to drop through. Shoot the Eyedoor and head through the door. Fall down in this room to encounter the next boss, Zazabi.

When Zazabi jumps from side to side it can’t be hurt. But when it jumps and slowly falls straight down, you must get directly under it and hit it’s eyes either with missiles or a charged beam shot.

After Zazabi is defeated, defeat the X parasite to absorb it and get the Hi-Jump and Jumpball abilities.