Defeat Gorea's second phase to unlock the "Sound Test" option.

Defeat a player in Multiplayer mode who is using a hunter you have not yet unlocked. Alternately, defeat the hunter in Single Player mode.

Get a 100% game completion in each file to unlock Suitless Samus.

Successfully complete the game with 100% of the scans to unlock the special hunters license icon. Successfully complete Adventure mode without the 100% ending to unlock a blue spiral icon next to your hunter license rank.

Get a 100% completion in Adventure mode to get an Octolith icon next to your hunter's license rank.

Get 25 total wins in Multiplayer mode to have a bronze lightning bolt icon next to your hunter's license rank.

Get 100 total wins in Multiplayer mode to have a silver lightning bolt icon next to your hunter's license rank.

Get 200 total wins in Multiplayer mode to have a gold lightning bolt icon next to your hunter's license rank.

Get the indicated number of points by winning WiFi matches to reach the indicated rank:

Bounty Hunter: 0-39 points
Super Hunter: 40-139 points
Elite Hunter: 139-389 points
Master Hunter: 390-750 points
Legendary Hunter: Over 750 points

Successfully complete the indicated task to unlock the corresponding arena:

Compression Chamber: Play 4 local games
Council Chamber: Play 16 local games
Elder Passage: Play 18 local games
Fault Line: Play 22 local games
Fuel Stack: Play 20 local games
Harvester: Play 12 local games
Head Shot: Complete a four-player match
Incubation Vault: Play 6 local games
Oubliette: Defeat the final Boss in Single Player mode.
Outer Reach: Play 10 local games
Sanctorus: Play 2 local games
Stasis Bunker: Play 40 local games or 1 WiFi game
Subterranean: Play 8 local games
Weapons Complex: Play 14 local games

After clearing each area in the game at least once, other Hunters will be randomly placed on each planet before you land. If you do not want to meet any of the Hunters in a certain area or want the area to be completely empty of Hunters, use the following steps. First, land your ship on any planet or outpost. Upon landing, exit your ship then go back in. You can play the level or go through a portal first. Launch your ship and go back to the selection screen. The Hunters should have moved around on the planets/outposts. Repeat this process until you get an empty planet, or until you eliminate any Hunters you do not want to encounter. Note: Remember that this will not affect your encounters with Guardians, because they are randomly spawned. However, if done correctly all you will fight are Guardians. Likewise, you can use this to get more Hunters on a planet/outpost and thus lower your chance of encountering Guardians.

Around the second Boss are three red buttons. Three worms will come out of them. Instead of shooting them or using missals, use the charge beam to kill them in one hit. The giant plant will then start to shoot at you and his mouth will be open. Shoot the little dot inside his mouth with the charge beam to do a lot of damage. Repeat this to defeat him. Each time you use the charge beam on the dot in his mouth, he will stay open for less time. Also, as usual, you must evacuate the area after you defeat him.

In the first fight with Gorea, there are six colored symbols on the wall. Destroy Gorea's arms so that he reveals the Seal Sphere. Jump to the outside ring of the room and Gorea should leave you alone. Shoot each symbol in the following order: yellow, green, orange, blue, purple, red. Each shot must be with the appropriate weapon: Volt Driver for yellow, Battle Hammer for green, Magmaul for orange, Shock Coil for blue, Judicator for purple, and Imperialist for red. This is taken from the Alimbic Prophecies collected via scans throughout the game. After activating all six symbols, you should get a message from your ship. Continue to fight Gorea. One you defeat him, you will be transported to the final battle arena for the true final fight.

Go into Morphball mode and do not move. Set all bombs down quickly. Once the bombs explode, immediately change to normal mode. You should jump even higher. Additionally, find a Metroid (the creatures that cling to your head). Get into Morphball mode and lay three bombs. As soon as they detonate, get out of Morphball mode. If done correctly, you will get a super jump.

In Survivor mode, make sure you are not too close to a wall. Tap the Morph icon on the touch screen (or B if in touch-shoot mode) Lay one mine. Note the energy spikes (blue lines) radiating off. Wait for them to converge directly under you. Then, tap the Morph icon (or B) to be sent up higher than normal. Note: You can also jump for more height.

If you are in the air at any time in survior mode and did not jump to get there (Morph Jump, fall off platform, etc.) you can jump. For example, if you accidentally fall off a platform, jump quickly and hold Back. This also allows you to jump on top of the level with a Morph/Retro Jump.

Go into Morphball mode and do not move. Then, throw a bomb and just before it detonates, throw another bomb. When it explodes, you will go into the air. While in the air throw another bomb. When you fall down, do not move. The second bomb will detonate, and you will fly into the air again but this time the third bomb will detonate and you will fly even higher. When the third bomb detonates wait one second then turn into Retro mode and you should go higher. If you jump when you turn into Retro mode you can go higher.

Select the stylus control type. Then, go to either Regulator or Survivor training modes. Now in order to shoot fast, have your fingers on both L and R and start pressing them one at a time very fast in sequence. Pressing L + R will cause you to shot two shots at the same time.

In Multiplayer mode, get as much of the energies (weapon energies) as you can, then get a the missile. Once obtained hold Fire (when you select the missile icon so that you have missiles) and you will start charging with the missiles.

Obtain the red missile icons two times (in Multiplayer or Single Player mode), then hold or tap and hold Fire.

If you use up all of your ammunition (Power Beam shots), you will get one more shot. However, you will shoot half as fast.

To get the alien off your head, morph into the ball and set two mines. This should also kill it as well.

In Trooper Module (survivor field), when you start, go to the left and go to the hyper jump area. Then, go into the blue area. Move to the left opening then go outside and jump to the open area in front of you (the generator). Next, go to the left of it and you will see a narrow area to walk on. Go on it, but be careful to not fall off. Go all the way then turn left. You will find a dead end. Perform the "Triple jump Metroid style" trick, and when you are in the air, jump forward over the field gap. It will appear as if you are walking in mid-air, but you are not. It is the stage which has turned invisible. Note: The field will show monsters and other players, and the ledges can be anywhere. So be careful and do this glitch only if you have complete knowledge of the field.

When the level starts, turn left. Follow the corridor. You will enter a large open area. Look to the left to see a console and a huge horizontal blue core above it. Jump on the console. If facing the wall, look to the right. (where the caged area is located; it contains a blue ammo pickup). Walk towards the caged area, staying on this raised part of the wall. You will notice a small arch, just big enough for Samus. The back part of the right part of the wall is completely passable. If you walk through it, you will die.

In Trooper Module, Morphball and go to the tiny spacing that launches you to the center. Obtain icon with bombs two times, then charge.

Successfully complete all of the training courses and get at least fifth place on the leader board on all the training courses. Once you complete the last one, the "Play Video" option will be unlocked on the touch screen. Touch it to se a short video of Samus discovering some enemies followed by a URL, www.metroidhunters.com. After you watch it once, you can watch it again by touching a small red dot at the bottom right of the main screen.