High-Tier Mission Battlefields bring back nostalgic enemies with newfound strength to challenge the most experienced players. In order to engage these foes, a key item purchased with Merit Points is required by each party member to enter the battlefield. Eligibility for this requires the original canonical content be completed. Rem's Tales, highly valuable materials, and powerful unique weapons and armors await the successful adventurer.
Key Item Sales
The following three NPCs sell the key items to enter the battlefields, one in each nation. Before you are allowed to buy the key item to enter the high level battlefield, you must meet the following requirements.
Must be level 95 or higher
Must have completed the lower level version of the battlefield
Note: More precise eligibility requirements for each battlefield can be found on each of the Phantom Gem key item pages.
Initially, players are only able to choose Very Easy, Easy or Normal difficulties while entering into a battlefield for the first time.
After winning your first battle on these difficulties, you are then able to choose Difficult or Very Difficult the next time you enter the fight.
Note that if a fellow party member has already initialized the fight, the battlefield will still be set to the difficulty chosen by the first party member to enter regardless of what you choose. This includes whether or not you have a higher difficulty unlocked or not.
Titles
Unique Titles are rewarded to players when they triumph over a battlefield on Very Difficult. These titles are listed below with the other battlefield information.
See the table below as an outline for Rem's Tale Chapters and R/E/M Upgrade items (Pluton, Riftborn Boulder, Beitetsu) that distribute into personal inventories upon winning a battlefield.
The type of Rem's Tales obtained from each battlefield is outlined in the battlefield section of this page below. These are denoted with the prefix "Direct Drop" to signify that each player who took part in the battlefields receives their own chapters.
As well as personal reward distribution, other chapters also appear in the party's treasure pool along with unique weapons and equipment. These items can be received by any party member. Any chapter may appear (Ch.6 thru Ch.10), not only the BCNM exclusive chapter.
The only exception to this chapter drop rule are the single fight Ark Angel HTMBs. These fights only drop a specific chapter in both player's personal pools and party treasure pools.
All battlefields except ★Divine Might
Difficulty
Content Level
Rem's Tale Chapters
R/E/M Upgrade Items
Very Easy
113
1
0
Easy
116
1
1
Normal
119
2
1
Difficult
Over 119
3
2
Very Difficult
Over 119
4
2
★Divine Might Only
Difficulty
Content Level
Rem's Tale Chapters
R/E/M Upgrade Items
Very Easy
113
2
0
Easy
116
2
2
Normal
119
4
2
Difficult
Over 119
6
4
Very Difficult
Over 119
8
4
Other Rewards
Drop rates for unique / rewards obtained as well as other rewards (E.g. Scrolls and upgrade materials) through these battles increase with the BCNM difficulty setting.
At Very Easy, Easy, and Normal difficulties, the drop rate for unique / items should be very roughly around 10% before Treasure Hunter. There is no data to support this drop rate, however.
At Difficult and Very Difficult, one item is guaranteed to drop. A second item has a very high probability.
Treasure Hunter will have a noticeable impact on drops for Very Easy, Easy, and Normal while having no effect for Difficult and Very Difficult.
Below Normal, drops are significantly rarer. Expect to go through dozens of fights with no rare/ex drops below Normal difficulty, especially without Treasure Hunter.
New High-Tier Mission BCNMs do not follow these rules. / drops are not guaranteed on Difficult or Very Difficult.
An additional personal drop is added during this campaign, and players have the chance at obtaining the following items after succeeding in certain HTMB:
An added gimmick was implemented in this battlefield compared to the other new battlefields, such as Champion of the Dawn II, because of the higher amount of gear obtainable:
For Normal, Difficult and Very Difficult, another equipment drop slot opens in the treasure pool for every one of the spitewardens that are killed during the battle.
Opening armor slots in the treasure pool does not guarantee a piece of armor will drop, but the overall chance of a drop increases. See the official forum post for further details.
As of the October 2025 update, any piece of the Malignance Armor set is now obtainable from a single Malignance Box drop.