Guardian Tower

Guardian Tower is unlocked once you defeat Master Squelch / Self-Made King in Squelch's Home, which can only be accessed within the post-game. After defeating Master Squelch/Self-Made King and watching the credits roll a second time, Mary will join your team and you'll have to go talk to the leader in Fairy Village.

General Information
Upon entering the Guardian Tower, the Black Knight is found guarding the way forward. Defeating them will allow the player to access the rest of the tower.

Every third floor is devoid of enemies, instead containing Treasure Chests or Healing Springs. Floor 15 have a warp hole in the center.

Floors 7 and 8 are poison floors, which are filled with Octocrats.

Floor 14 contains a Teleporter maze littered with Shine Mists. The fastest way to complete the maze is to always take the teleporters directly right or left of you.

Floor 15 has the dungeon's warp hole. Climbing to Floor 18 will lead to the bosses of the dungeon, the Guardians.

Treasure
F2 F3  F4  F5  F6  F8  F11 F12 F13 F14
 * Flash (Clothing - Body)
 * Full Potion S (Item)
 * Earth (Clothing - Body)
 * Mystery Scarf (Clothing - Head)
 * Full Revive S (Item)
 * Roller Skates (Clothing - Legs)
 * Mirror Suit (Clothing - Body)
 * Barrier (Item)
 * Dark Gloves (Clothing - Hands)
 * Light Boots (Clothing - Legs)
 * Death Bracelet (Clothing - Hands)
 * Iceberg (Clothing - Body)

Monsters
Guardians (Bosses)
 * Big Horn (Level 115)
 * Dark Shaman (Level 114)
 * Turbo Angler (Level 118)
 * Shield Armor (Level 112)
 * Octocrat (Level 118)
 * Light Tortoise (Level 119)
 * White Barnacle (Level 103)
 * Jewel Molar (Level 99)
 * Shine Mist (Level 109)
 * Black Knight (Level ??)
 * Rook (Level 120)
 * Queen (Level 120)
 * King (Level 130)