Note: To beat Lunpa's fortress you'll need the Cloak Ball that you get on the desk of Babi and also Catch which you get by equipping Catch Beads (you have this even if you don't think you have this.)
Things in Lunpa look pretty cheerful, and the villagers of the town won't have any problem with you roaming around the town. However, if you try to buy the latest weapons and armor you'll find that they dealers have nothing to sell because no one can get in and out of Lunpa (well, except for you ;-].) The inn won't be much help either, because for some reason the owner of the Inn has an attitude and won't let anyone stay rest in his beds. There are a few items to get in Lunpa, though. Head to the north part of town to find the northern gate. Here there will be a small rock in the middle that you will want to reveal. On revealing, you will find a puddle that you should freeze. Then, head up the ladder a little to the west and hop over the ice pillar. Make sure that you don't step out of the reveal area or the ice pillar will disappear and you'll have to do it again. Once you're to the other side, keep heading clockwise until you reach an apparent dead end. Use reveal on the cliff to find a small sparkle that you should press A against to reveal a hidden entrance. Go through here to find a room with a ton of treasure chests in it. Here's what they have: Water of Life Smoke Bomb Lucky Medal Antidote 44 Coins Elixir When you get all of the items you want in this room, head back counterclockwise and slip down the crevice in the side of the cliff that's next to the Potion shop. Head to the southwest part of the town to find a small rock circle that has a Psynergy stone in it.
Once you're done with everything, head to the north pat of the town to find yourself at the Lunpa Fortress Gate. You'll notice some guards here, and the only way to get past them is to use cloak. So, equip the Cloak Ball that you got from the desk of Lord Babi on one of your characters, get in the shadows and use the Cloak Psynergy. Why do you have to be in the shadows to use Cloak? Well, if you go out of the shadows it won't work, which can get quite annoying later in this cave. any ways, sneak around in the shadows and go into the Fortress. At this time you'll want to set Cloak as one of your Hot keys (the L or R button) for quick going to in the future.
Here's some information from Aditya Durgam [[email protected]]: "I have some information on the first group of three guards you encounter in Lunpa Fortress: Guard #1 has anywhere from 248-492 HP; Guard #2 has anywhere from 353-704 HP; Guard #3 has anywhere from 247-493 HP. Guard #2 has a smoke bomb. Guard #3 does approx. 81 damage with his regular attack. Guard #1 has some weird attack called "Slice". By beating them, you get 570 coins and some "Crystal Powder".
Also, I have info on the second battle with the other guard. Here, he has anywhere from 402-446 HP, most likely 446 HP. He has a smoke bomb. If you beat him, you get 190 coins and approximately 160 experience points."
Head through the first door and go off to the right. There will be two guards here that you have to sneak past in the shadows, so use cloak to get by them. Go down the stairs and as soon as you get into the next room use Cloak. Go all around the center rock counterclockwise to sneak past the guard. When you get to the top your cloak will go away, so make sure to re-Cloak or risk getting thrown out and having to start over. Head through the door and then stop. Put on cloak and wait a few seconds for the moving guard to come up. When he branches off to the left sneak past him south and go through the door. In the next room use Cloak right away and start heading south along the shadows. Head up the stairs here and once again turn cloak on. Here there will be two guards going back and forth quickly in two separate hallways. Between the two guard's light will be a crevice where you can hide until the top guard goes back and you can sneak past him too. So, when the first guard starts going west sneak past him and into the crevice. When the next guard goes past sneak past him as well and go into the next room. In this room don't go up the stairs but instead go along the hallway until you get to a door going south. In here there will be three guards in red that want to battle you as opposed to the others who would kick you out. These guys aren't the least bit tough, and 1 4-Level summon should knock these guys out. Once they're defeated run past them and go the next room. Go along the hallway in this room to come to a guard who will, like the three before him, want to fight. He's just as hard as any one of the three previous guards, so you shouldn't have any problem with him. Once you're done with him there will be two doors, one going north and one going south. Head through the door going north first to reach Donpa, who's sick in bed, and his wife by his side. There's a door behind her that she blocks you from entering, so simply talk to her and see what she has to say then leave. Go through the door to the south to find a rather tricky guard (you may want to save prior to going in this room.) Right as you enter this room use Cloak and stay where you are. When the guard reaches his highest point on the left, wait for him to go down a little then start heading south. You should be able to sneak past him and get to the next room.
The next room pits you behind some jail bars with a large key on the desk in front of you. To get this you'll have to use the Catch Psynergy that you got in the beginning of the game when you left Vale for the first time. Look around for the Catch Beads item and equip it. Go up to the bars and press Select to bring up the in-game menu. Go to Psynergy and use Catch to bring yourself the key. As soon as you go through the gate a guard will challenge you to a fight. He's as easy as ever, and you shouldn't have any problem defeating him rather handily. Continue down the stairs to find another room with bars in it. You need not go through the bars as the door in there leads you to the start of the Fortress. Go down the stairs and find yourself in a room with a locked door an some leaves to the west of it. Use Ivan's Whirlwind Psynergy to clear the leaves. Next, use Reveal to find the hidden switch that you have to hit which opens the door. In the next room hop across the small river gap and go northeast. Here you will find a door concealed by some shrubs, so whirlwind then reveal the door to go through it. In this room head through the path in the middle to find a treasure chest with some Power Bread in it that boosts a party member's attack. Head down the hallway to the south and go through the door. Go up through the jail cell and start pushing the large box south. This is going to be a *long* push so go grab a snack while you hit the down button. Once the box is finally pushed down the ledge jump to the left and go through the jail cell. Do the whirlwind/ reveal thing again to open the door. In this next room save, because you're about to fight a boss. Put all of your Djinn (save Mia's so that she has Wish) on Standby and head through the jail door. In this room you'll find Lord Hammet (finally), and after a little bit of conversation Dodonpa will come in. He'll pull a lever and reveal a giant monster that you'll have to fight. Man, what a wuss... not even fighting his own battles. any ways, you're about to fight another boss, this one being Toadonpa.
As always cast all of your summons on him to have him take a huge amount of damage. However, he's got a lot of HP so summons alone aren't going to do it. Watch out for his individual attacks that really pack a whollop, so have Mia use her Wish on everyone each turn. Have Isaac use his Ragnarok attack, have Garret use his Heat Wave or Nova attack and have Ivan use his most powerful Tornado attack each turn. As long as the characters stay alive, and you use a few Djinn each turn to get your Summons back, this guy shouldn't be too difficult. When you beat him you'll get a Psy Crystal which will be helpful later in the game.
Once the battle is over you'll find Dodonpa trapped underneath the monster you just fought. Hammet will make you get it off of him and then talk for a while. This is one of the weakest moments of the plot that makes no sense ("Dodonpa kidnapped you, remember?" "Oh yeah") and has you do nothing to Dodonpa because he "learned his lesson." Donpa will eventually come in and tell you that you'll have to sneak out of town or some of Dodonpa's loyal henchmen will hunt you down (oh not the tough guards that you fought before, anything but them). You'll automatically escape to outside of the Fortress, and from there go back into the town and back into the cave from whence you came (10). In the cave go back along the hallway and flip the switch that's a little north of the gate. Keep heading south towards the cave exit to find one of Hammet's servants (Bunza) sneaking around. He'll offer you a ride in his wagon which you will want to decline (if you did take it you will eventually leave you back in Kalay).
The reason for declining the wagon ride is to get a Djinn in Lunpa Fortress. To do this, you'll have to revisit Lunpa after the whole conversation below finishes. Head back into and through the cave. Head north in Lunpa to the fortress and sneak in. This time there will be a nice little shortcut to get where you want to go. Head to the door to the southeast once you get into the first large room to find a jail door that you can go through now that you have the Cell Key. Go through the jail door and up the stairs to the northeast. Fight the guard in here and then head through the jail cell and up north through the door. In the next room act quick, equip cloak and then run as quickly as you can north to evade the guard. Go through the door and fight the guard blocking the entrance to Donpa's room. Once you've defeaten him, head into Donpa's room and talk to him. He'll get up and he'll make his wife move from blocking the door. In here will be the Mercury Djinni Tonic that you will get without a fight. You're now free to leave Lunpa, so retreat out, exit, and continue on with your quests (see below.)