Final Fantasy 7 - Walkthrough - Part 41- Underwater Reactor, Guidebook Key Item, Submarine Mission
100:00 - Now to continue with the main story. We still have more Huge Materia to find before Shinra get to it, so let's head to Junon. Run to the left and pay the Shinra Soldier to use the elevator. Then head up.
01:12 - Head out to the main area where the shops are. You can stock up on items if you wish but there isn't anything hugely of note to buy.
06:45 - When you get to the grey corridor area, head down and challenge the training soldiers. After they run away, follow them down and head into the elevator to make your way to the underwater reactor.
08:13 - After the two battles, continue down the corridors until you get to the next elevator. Click on the switch to head down. In the area with the glass tunnel, make sure you equip one of your party members with Morph Materia. Random battle until you find the Ghost Ship enemy.
10:48 - Use sense to keep an eye on it''s HP and use attacks and magic to get it's HP down as low as possible without defeating it. Then use Morph to take it's HP to zero so it will change into the Guide Book key item. This is going to come in very handy later on in the game.
12:45 - Now continue down the corridor to the next screen and into another elevator. Click on the button to the left to head down further into the reactor.
13:15 - Keep following the path left along the walkway and into the main reactor area. Speak with the Shinra Soldiers here to fight them all along the way.
14:50 - When you come across the Underwater MP soldiers in the beige uniforms, make sure you steal a Shinra Alpha armour from them. After the battle continue to the right and follow the walkway right to get to the submarine. Before speaking with Reno, make sure you heal and prepare for the upcoming boss battle.
20:00 - Carry Armor is one of the tougher boss battles in the game. If you have been following this guide and are at a decent level with a good set up then it shouldn't cause too many issue. Start with the usual set up of Big Guard and Regen. It is weak to Lightning and nullifies Gravity and Poison, however if you have the enemy skill Magic Hammer, use this on the boss twice so it can no longer cast the high damage attack Lapis Laser.
Then attack away with Limit Breaks, Bolt3 and high damage enemy skills such as Magic Breath and Trine. After the battle, it will drop the God's Hand weapon for Tifa.
23:10 - After the battle you will realise that it was just a distraction to get the submarine with the huge materia away. Head to the left and pick up the Battle Trumpet weapon for Cait Sith, then run towards the second submarine at the back.
23:30 - Before heading on board, first pick up the Scimitar weapon for Cid and the Leviathan Scales from the chests on your right. These are missable, so make sure you collect them first. The Scimitar is one of the two weapons in the game that has triple Materia growth.
23:50 - Once you have both items, battle your way onto the submarine. When you get inside you will run into the soldiers from the parade earlier on in the game. You get the option of fighing or taking them prisoner. Note that the battle doesn't grant any rewards except the usual.
27:40 - Whatever you decide to do, check the manual to begin a mini-game. Memorise the controls, which are pretty straightforward. When you are read to play, choose to sit in the seat and start the mission!
28:44 - This is surprising really easy, at the start of the game you will be directly behind the red submarine you are looking to destroy. Just allign yourself at the same depth, speed up and quickly fire missiles at it to quickly end the game. Just be careful of the various mines by adjusting your depth.
If you do lose track of the red submarine, you will also have several other yellow submarines to contend with. Try pressing PgDn/R1 to use your radar for a quick overview to locate the red sub once again.
29:15 - After the game, you will have unlocked the Shinra Sub to move around the map in. Head back to Junon and make your way via the elevator to the airport. Unfortunately you will just miss the Huge Materia. Make your way back outside and to the submarine.
33:00 - Submerge at the Junon and head southwest until you find the downed red submarine. Approach this and Cloud will automatically collect the Huge Materia. The big green creature swimming about is Emerald Weapon, one of the extremely tough optional bosses in the game. You can head to the surface and resubmerge to get it to move out of the way.
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