Final Fantasy IV/Watery Pass & Antlion

Waterway South
When you enter, you can take the steps to the north or travel the path to the west. The chests to the north contain a potion and Maiden's Kiss. When you travel to west, go as far as possible, then take the bridge north and speak to Tellah. If you spoke with Rosa in Kaipo, then he will join your party; otherwise, he will send you back. Once you cross that bridge, go to the upper left most corner, and go through the door.

An Iron Ring is available in the top-right corner of the map.

B2F
Head north, as far as possible, then there will be a steps on the left to enter the water. The first stairs on the left leads to a Potion. Otherwise, continue south as far as possible, and climb the steps back onto land. From here, the chest to the left contains an Ether, with the bridge leading for a single path that will reach a save point room (where Tellah will cause the party to rest as part of a cutscene, explaining about Anna and the upcoming monster.)

Savepoints allow you to save the game, as well as allowing you to use a Tent or Cottage to restore HP and MP.

After the savepoint room, look for an Ice Rod to the north. Aside from the chest, there is only one path, which will lead to the middle door.

B3F to Waterway North
Continue down, across the islands and bridges to the left (the right branch leads to 580 Gil and a Bomb Fragment), and continue to the next room, B2F. In this room you can go only go north, so follow this path into the next room, Watery Pass-North.

A secret wall is coloured blue in the second B2F room. It leads to a leather helmet, but later secrets tend to be more valuable. Continue to the north to reach the next area.

To the left are a few chests (Ether, and Antarctic Wind). To continue, find the bridge that leads to the right. Cross this bridge. Before leaving, you can get an Hourglass and Shadow Blade to the south.

When you leave this door you will be outside for a short distance. If you're low on HP or MP, you can use a tent.

Waterfalls
In this cave you will see a large waterfall in front of you. Walk straight into the waterfall and you will be brought down to the next level. When you regain control, climb the stairs to dry land and proceed along the path to the western door. When you reach the branch on this path, you can turn south to obtain better armor for Cecil.

Lake
Follow the path to the water (get the chest on the right side which contains the final piece of armor for Cecil). Go straight north toward the waterfall and walk into the place where red tentacles are moving. At this point you will be forced into battle with Octomamm.

Octomammoth
Octomammoth is weak against Lightning attacks. Use Rydia and Tellah to attack him with Lit, and heal your party whenever necessary. Have Cecil attack with his sword. Octomammoth will slowly lower his tentacles into the water until defeated. When you defeat him, walk towards the waterfall where his tentacles were and you will be outside the cave.

Damcyan
Walk to the left and up and you will see Damcyan castle in front of you. A cut scene will interrupt when the Red Wings attack the castle. Walk into the castle and travel all the way up until you reach the room with Anna laying on the floor. Once this sequence has completed, Edward will join your party and you will be placed outside the castle to head to the Antlion's Cave.

Find Antlion's Cave
Using the hovercraft go to the northeast corner of the desert and travel across the shallow water. Once on land again, immediately to the south is the Antlion's cave. Get off the hovercraft and enter the cave.

Inside the Cave
Go to the bottom of the room, and then go to the right until you see a door. Enter it. In the second room, follow the main path available until you reach the door at the bottom center of the room - other branches lead to side rooms that contain curative items (with the first branch containing a harp). Go through this door, and you will be in the Antlion's lair. Head straight forward up to the Claws in the ground. After the sequence in which Edward attempts to get the SandRuby, you will be entered into battle with the Antlion.

Fight the Antlion
During this battle, any time you attack the Antlion with a weapon, he will counter with a powerful needle attack. For this reason, with Rydia and Edward it is probably better to use magic (and a song for Edward) because of their weak physical attack. You can also have Rydia use the Chocobo summon for a heavy-hitting physical strike that won't illicit the Antlion's counterattack. When you have completed the battle follow the cave back to the entrance.

Return to Kaipo
Take the hovercraft back towards Damcyan and continue to the southwest of the desert. and you can cross the rocks back to the desert where Kaipo is. Get off the hovercraft and enter Kaipo. Go to the house with Rosa and use the SandRuby on her. When she awakens, she will tell you about the newly appointed captain, Golbez, who appears to be manipulating the king to claim the crystals for himself.

The party will rest for the night, but Edward goes out for a walk.

Edward's Fight
After speaking with Rosa, a cut scene will begin, when Edward goes outside the house and is attacked by a monster. You will have to fight him, but it is fairly simple. Just attack with the harp and you will win easily. When this is finished, you regain your party and can prepare to leave town.