Lunar Ruins Lunar Ruins is a bonus dungeon in " Final Fantasy IV Advance " and " " . It is located at the Stone Face on the Red Moon , a subtle reference to the found on Mars in the real world . It is unlocked by defeating Zeromus . The mobile versions of " Final Fantasy IV " have an all new " EX Dungeon , " which is a remake of the Lunar Ruins . The Stone Face is the new location of Golbez ' s second Challenge Dungeon in " " . Layout . The Lunar Ruins ' floors are randomized , and players will rarely experience the same pattern of floors twice . However , there are a few particular patterns . There are ten sets of floors of which the sequence of the sets of floors is fixed . In each set , there are three normal floors and the fourth is a gate floor , which contains a save point , a door to each game character ' s challenge ( Trial ) , except the tenth set , which leads to Zeromus EG , and a stairway that leads in another set of floors ( three normal floors and a gate floor ) . Each floor is chosen randomly . In the normal floors the player just needs to reach the exit . There are enemies to battle and treasures to find . There are two villages that sell rare items and equipment at prices in upwards of 100 , 000 gil . By this time the player should be able to afford such prices , as enemies are likely leaving over 20 , 000 gil a battle . Shrines with Sylph s are occasionally found . If only one Sylph is found , the characters will be healed . If there are three Sylphs , in addition of the full heal , the player will receive a Megalixir . There are floors where old men give the player a quiz . If answered correctly , the player will receive a prize and / or the exit . In challenge floors the player must conquer a challenge to win . In one , the player must memorize a code and find and hit the buttons in the order given ; in another , they must find and kill a " Platinum Toad " for a man . " Floors of Remembrance " mirror the floors of previous dungeon s the player has visited , and they can encounter enemies from that dungeon in addition to new enemies . Any treasures that existed in the original dungeon will be present , but the items they contain will be different — some also have chests added where previously there were none . There is a floor entirely of Flan monsters resistant to physical attacks , and another of monsters resistant to magic . NPCs will appear when the player enters these floors to tell them about this . There are floors where mini - bosses or special enemies appear on the map , and the party must navigate through them to proceed . Finally , near the bottom of the shrine the player may find a floor containing the Brachioraidos , the hardest boss in the game . A man at the floor entrance warns the player not to face it . It drops the strongest shield in the game , the Hero ' s Shield , which can be acquired nowhere else . Floors . This is the list of the floors of the Lunar Ruins . This order is not the real one , some floors ( with the exception of some ) are randomized . Trials . The only floors which the player is guaranteed to find are the Trials . The Trials are unlocked for each character once they defeat Zeromus , testing the player in multiple ways , and end with battles against Lunar versions of the summons . After defeating one of the Lunar Summons , the player gains a Grimoire for that summon , and is able to summon the Lunar Summon in battle once . After completing a trial , the player gets either an ultimate weapon or accessory for the character whose trial is completed . To redo a trial , the player must first use the Grimoire gained from defeating the Lunar Summons in their respective trials . Yang ' s Trial . Yang ' s trial is one of strength ; the party must defeat many monks working in teams of eight — Soldier Monk s , Super Monk s , and Drillmaster s . After defeating all the monks the party fights Lunar Titan . After its defeat , Yang gets the Discipline Armband , which turns his Power command into Deadly , which charges and then triples the damage . Edward ' s Trial . Edward winds up in an illusion of Damcyan Castle ' s ruins , covered in ice and snow . The party is attacked by a Specter . It cannot be killed through normal means , but Edward uses the Requiem Harp to Sing and instead of the usual effect , he plays a Requiem , thus giving the tortured soul eternal rest . All the Specters ( blue flames ) throughout the ruins must be killed and Edward must use Sing while equipped with the Requiem Harp to lay it to rest . The spirit must be killed once before Edward will use Requiem . The party eventually finds an underground waterway and reaches a room where a fight with Lunar Shiva ensues . After her defeat , Edward gets the Harmony Ring , which changes his Sing ability into Chant , casting Protect and Shell on the party . Rydia ' s Trial . Rydia enters a cave filled with mist . She turns back into a child , and Ifrit , Titan , Ramuh , and Shiva abandon her . The party must find them and defeat them to regain them . After defeating them the mist dissipates , and the party fights Lunar Mist Dragon . After defeating it , the player gets the Mist Ring , which improves Rydia ' s Mist Dragon summon and grants the party the Blink status . Cecil ' s Trial . Cecil enters a castle and is addressed by an unknown voice , who tests his abilities to do good deeds as a paladin . Cecil progresses through several rooms where he must prove himself as a true paladin by doing good deeds , such as by not taking treasures from others , fulfilling requests properly , and so forth . Cecil meets the king of the castle who gives him a sword based on the trial ' s success . If he does everything right , Cecil gets his ultimate weapon , the Lightbringer . If he fails even one test , he gets a weaker weapon , and gets a useless Throw item for Edge if he fails all of them . The player fights Lunar Odin regardless of which weapon they received . Rosa ' s Trial . Rosa enters a town that is promptly destroyed . She must heal the injured townsfolk , fourteen in all , although some are just Metamorpha in disguise . After healing as many as possible before the time runs out , the party fights Lunar Asura . After her defeat , if Rosa healed all fourteen people , she gets the White Ring , which turns her Pray command into Miracle . Edge ' s Trial . Edge winds up in a labyrinthine castle . He finds his way to the king and compliments the castle , but is dropped into another portion . He must find his way back to the king through a series of hidden passages , Pitfalls , traps , switches , and so forth . The Palace Guards drop Keys if defeated , needed for doors . After the ordeals , the player fights Lunar Ifrit . Edge gets the Hanzo Gloves , which turns his Steal command into Plunder , increasing the chances of a successful steal , as well attacking at the same time . Kain ' s Trial . Kain enters the town of Baron where there have been several murders by a lance - wielding assailant . Kain investigates , and after Rosa is kidnapped , he is suspected as the culprit and is arrested . Kain clears his name , but does not feel content , and during the night , he sees Cecil walk into the Devil ' s Road house . Kain follows him and is warped to a strange mirror room where Rosa is bound and Cecil is unconscious on the floor . In the mirror , he sees the dark reflection of himself , which is tempting him to kill Cecil . Kain can elect to do this , but the trial will end . Kain refuses , and must engage in simple combat with a Shadow version of himself , which transforms into Lunar Bahamut . After Kain defeats Lunar Bahamut , he gets Abel ' s Lance , his ultimate weapon , which sometimes casts Tornado when he attacks , even if the enemy is immune to it , as well as the Dragoon Gloves , which allow him to Double Jump and increase his power . Cid ' s Trial . Cid appears on an island , near his airship . A person on the airship asks him to fly him to a destination before the timer reaches a certain limit . At the destination , another person arrives and wants to be flown to another destination in a lesser time limit . After a while , Lunar Ramuh is angered about Cid flying all over his skies and attacks . After his defeat , and if all of the passengers are delivered on time , Cid gets the Fiery Hammer , his ultimate weapon , which casts Flare at random when he attacks . Palom and Porom ' s Trial . Both Palom and Porom must be in the party to perform this trial . Palom and Porom must work as a team , inflicting various status ailments on themselves to infiltrate a series of hidden passages . Switches in one passage typically open doors in the others , forcing them to work together and the player to switch control between the two frequently . Once they reach the end of the passages , the player fights Lunar Leviathan , and Palom and Porom get the accessories Twin Stars , which enable them to cast stronger spells , including Double - Meteor , with the Twin command . The Final Trial . After the characters ' trials , the last floor of the ruins contains the superboss Zeromus EG . They can choose not to fight him and can simply warp out of the ruins . Fighting Zeromus EG earns no rewards except for his Bestiary entry . Enemies . The enemy formations in the ruins varies greatly from floor to floor , and combines enemies met throughout the game with new enemies found only in the ruins . On some floors the enemies appear on the map and can be seen and avoided .