Throughout your adventure you’ll be haunted by chests, doors and gates you cannot open. Locked objects colored red will yield to the Thief’s Key while blue objects can be opened with the Magic Key, but green chests and unadorned metallic gates and doors that resist the aforementioned keys require the Ultimate Key to unlock. Alas, you won’t find this Ultimate Key until you visit the Rendarak Shrine near the end of the game. Just talk to the Priest and he’ll… hand it over. Rather anticlimactic, but don’t look a gift priest in the alb - we’ve got some backtracking to do to hunt down the treasures in previously-explored areas you can now obtain. This page will hopefully save you some guesswork and list all the treasurers you can get with the Ultimate Key in Dragon Quest 2: HD-2D Remake!
Page Breakdown¶
The Priest in Rendarak Shrine will relinquish the Ultimate Key when you talk to him.
Ultimate Key Location¶
To acquire the Ultimate Key, you will need to reach… pretty much the end of the main questline. Fight your way through the [Passage to Rendarak], then trek across the snowfields of Rendarak to reach Rendarak Shrine to the northeast. Inside, talk to a Priest and he’ll just give you the Ultimate Key. This will, at your discretion, start the last great treasure hunting backtrack of Dragon Quest 2: HD-2D Remake!
Ultimate Key Treasure Locations¶
| Treasure | Location | Map Marker |
|---|---|---|
 Metal Slash Scroll |
Midenhall: In a green chest in the well. | map marker |
| Mark of Erdrick | Midenhall Castle - 1F: In the treasure room along the southeastern edge of the level, in the green chest. | map marker |
 Tombola Tickets x7 |
Midenhall Castle - B1: In the easternmost cell, in a pot along the northern wall. | map marker |
| Erdrick’s Helm | Sanctum: Talk to the Sage once you have the Mark of Erdrick and he’ll move out the way, allowing you to claim the helm. | map marker |
| Special Medicine | Cannock Castle - B1: In the westernmost cell, in a pot in the northeastern corner. | map marker |
| Seed of Magic | Cannock Castle - B1: In the westernmost cell, in a pot in the northeastern corner. | map marker |
| Saviour’s Staff | Moonbrooke Castle - 1F: In a chest behind the throne. | map marker |
| Duplic Hat | Port of Rippleport: In the eastern building, in a green chest along the eastern wall. | map marker |
| Tombola Tickets x9 |
Tantegel: In the second floor of the church, in the cell. Search the fur rugs near the bookshelves in the corner. This is a hidden item. | map marker |
| Special Medicine | Tantegel Castle - 1F: In a locked treasure room along the west-center of the map, in a blue chest. | – |
 Great Helm |
Tantegel Castle - 1F: In a locked treasure room along the west-center of the map, in a green chest. | – |
 Bastard Sword |
Tantegel Castle - 1F: In a locked treasure room along the west-center of the map, in a green chest. | – |
 Oomph Powder |
Tantegel Castle - 1F: In a locked treasure room along the west-center of the map, in a blue chest. | – |
 Goddess’s Tiara |
Tantegel Castle - 2F: In a green chest in the northwestern room. | – |
| Lyre of Ire | Faerie Palace - 1F: In a chest to the northeast, near the item merchant. | map marker |
| Staff of Rain | Faerie Palace - 1F: In a chest to the northeast, near the item merchant. | map marker |
| Elfin Elixir | Faerie Palace - 1F: In a chest to the northwest. | map marker |
| Demon Whip | Craggy Cave - B2: In a green chest in the southeastern corner of the level. | map marker |
 Showy Shield |
Craggy Cave - B2: In a green chest in the northwestern corner of the level. | map marker |
 Kafrizz Scroll |
Craggy Cave - B2: In a green chest along the western edge of the level. | map marker |
| Flame Armour | Damdara: In a green chest along the eastern edge of the walled-off part of town, through some ruins past a poisonous swamp. | map marker |
 Somatic Staff |
Cantlin: On the second floor of the northeastern building, in a chest. | – |
| Tombola Tickets x6 |
Cantlin: In the central-west building, on the second floor. Go through a door and loot the second bookshelf from the right. | – |
| 5,000 gold | Cantlin: In the southeastern most house, enter via the eastern door and loot a green chest near a sink. | map marker |
 Orichalcum |
Craggy Cave - B2: Talk to the Scholar behind the locked door (Ultimate Key) in Cantlin to learn about Robbin’ ‘Ood. Then head to the church in Tantegel and talk to the Prisoner in the church. Finally head to Craggy Cave, head down the southeastern stairs to reach an isolated chamber and search a sparkly spot to the northwest to find the Orichalcum. |
map marker |
| Erdrick’s Sword | Kol: Bring the Orichaclum to the second story of the weapon shop in Kol and talk to the Swordsmith. | map marker |
 Shimmering Dress |
Shrine of Rain - 5F: Atop the center-east tower, in a green chest | – |
| Tombola Tickets x10 |
Kol: In a green chest in the well. | map marker |
 Mighty Armlet |
Quagmire Cave - B2: In a chamber in the central part of the level, in a green chest. | map marker |
 Dragon Claws |
Quagmire Cave - B1: In a chamber along the easternmost edge of the level. Go down the stairs to the southeast to reach B2, then on B2 go up stairs along the northwestern edge of the level to reach the isolated interior of B1, then work your way southeast to reach this chamber. | map marker |
| Seed of Agility | Rimuldar: In the church along the southern edge of town. Enter via the western door, go upstairs and enter the cell. This treasure is in the rightmost of two barrels. | map marker |
| Tombola Tickets x6 |
Rimuldar: In the church along the southern edge of town. Enter via the western door, go upstairs and enter the cell. This treasure is in the leftmost of two barrels. | map marker |
| 3,400 gold | Rimuldar: In the church along the southern edge of town. Enter via the western door, go upstairs and enter the cell. This treasure is in a pile of hay. | map marker |
| Mini Medal |  Dragonlord’s Castle - B5: From the stairs leading down to B6, head west into a hallway and when you find a passage north, take it, then turn east and loot a green chest. |
map marker |
 Sage’s Stone |
Dragonlord’s Castle - B6: In the treasure room, in the rightmost green chest. |
map marker |
 Dragon Robe |
Dragonlord’s Castle - B6: In the treasure room, in the rightmost green chest. |
map marker |
| Oomph Powder |
Beran: In a tower along the northeastern edge of town. Head inside and search the northern wall. This is a hidden item. | map marker |
| Mini Medal | Shrine North of Beran: In the building, in the green chest on the middle dais. | map marker |
 Magic Bikini |
Zahan: In the large northern building, across the electrified floor to the east, through a gate. Loot the red chest. | map marker |
| Seed of Agility | Burrowell - B1: In the northeastern house, in the northwestern cell. Search a pot to get this item. | map marker |
| Mini Medal | Burrowell - B1: In the northeastern house, in the northwestern cell. Search a green chest to get this item. | map marker |
| Mini Medal | Dirkandor Castle: In the animal cell to the west, search a pile of hay. This is a hidden item. | map marker |
| Flame Armour | Shrine East of Slewse: In a green chest in the eastern room. | map marker |
 Falcon Blade |
Shrine East of Slewse: In a green chest in the western room. | map marker |
| Mirror Shield | Manor of the Monarch of Medals: In a green chest on a circular pavilion to the east. | map marker |
 Princess’s Robe |
Manor of the Monarch of Medals: In a green chest on a circular pavilion to the west. | map marker |
 Meteorite Bracer |
Secret Area Between the Tower of the Wind and the Rendarak Region: On the western edge of a strip of desert between the Tower of the Wind and Rendarak you’ll find a secret area. Loot the green chest inside. | map marker |
(1 of 6) The Ultimate Key will allow you to get many potent treasures, like Erdrick’s Helm,
Best Ultimate Key Treasures¶
There’s a lot of good treasures on this list, but the real winners are:
- Erdrick’s Helm: a helmet with high defence that also grants resistance to ailments like sleep, confusion, bedazzlement, paralysis and instant death. Check out the link provided for a complete walkthrough.
- Erdrick’s Sword: another relic of your heroic ancestor, it has a high attack power and can be used to cast
Swoosh in combat (again ,check out the link for a complete walkthrough). - Sage’s Stone: An item that can be used to effectively cast Midheal in combat, free of charge, as many times as you’d like.
- Falcon Blade: A sword that strikes twice in combat, superior damage compared to
Mercury’s Rapier, albeit without the Agility boost. - Meteorite Bracer: The second one of these you can find in the game (the other being in a blue chest in the in at the Oasis area), this accessory doubles the wearer’s Agility stat - very useful when you can to control who goes first in combat!
- Duplic Hat: A hat that causes the wearer to cast the same spell twice in a row when equipped. It has poor defense and no other special abilities or resistances, but you can don it when you need it and stash it when you don’t. Useful for doubling up on buffs/healing in a pinch!
Make absolutely sure you get those to make your fated confrontation with 
Hargon easier!
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