[Korea] Book of Nightmares Event

• After the Library of Memories collapses, beings from the other side of the dimension appear to target adventurers! Defend the monsters' attacks and overcome the Nightmare Corridor.
• First, clear the event quest through the Nightmare Book of Seria's Room NPC and go to the Library of Broken Memories.
• You can enter the Nightmare Halland Dungeon through icon in the notification area or the NPC Nightmare Book.
• Clear up to 15 floors within a 10-minute time limit by using the gap destruction and special system. The monsters that appear on each floor change every week.
• If you consistently clear daily/weekly/cumulative missions, you will receive rewards. Various gifts with nightmare coins in the event shop!

• Only single play is possible:
• It consists of a total of 15 floors. You can play the dungeon for a limited time of 10 minutes. 
• There is no limit to the number of times you can enter the Nightmare Corridor Dungeon, and fatigue and durability are not consumed.
• Actively use the special system (Destroying Disparity. Understanding Disparity. Seeing Through Disparity. Memory of Confidence) to gain Willpower
• The types and order of monsters that appear change every week.

• This dungeon has a "Guard System" that consumes 100 Willpower:
• If you completely block attacks with Guard, you can use Guard without a cooldown by recovering the gauge to 100.
• If you continue to guard without being hit, you will receive a damage increase buff.

• Use the Essence of Understanding to increase your ability to break the gap:
• You can obtain the Essence of Understanding by clearing the Nightmare Corridor (Up to 160 can be obtained per week)
• You can use the Essence of Understanding to grow your desired abilities! (Up to 8 stages can be grown)

• Succeed in breaking the gap review and obtain the gap insight gauge:
• When you successfully destroy the gap, you gain 20 gap detection gauges.
• The gauge decreases by 1 per second, and when you are hit by a monster, the gauge decreases by 10.
• You gain useful buffs based on the gap detection gauge accumulation amount! (The gauge increases in level every 100 accumulation amount)

• Rescue the Memory of Certainty and receive useful buffs:
• You can rescue the Memory of Certainty when clearing 4th, 9th and 14th floors, and you can choose one of the three buffs (You can choose within 30 seconds, and if you do not choose, one will be automatically chosen.)
• The buff only lasts while playing the dungeon.
• Caution! The dungeon clear time is consumed even while choosing a buff!
• When you choose a buff, the card encyclopedia is registered, and you can receive a reward depending on the number of card encyclopedias you have completed!

• You can earn Nightmare Coins and Mission Experience by completing daily/weekly/cumulative missions. If you accumulate Mission Experience, you can even get bonus rewards!

Stage	Rewards
1	Advanced Dungeon Material Selection Box, Selectable List: - 2000 High-Efficiency Abyss Battery - 1000 Refined Mist  7 Days Master Contract  1 White Ocean Advanced Dungeon Entry Ticket
2	1000 Mist Core  500 Memory Remnants  Advanced Dungeon Material Selection Box, Selectable List: - 2000 High-Efficiency Abyss Battery - 1000 Refined Mist
3	50 Power Essences  1 Otherverse Energy Purification Scroll and 1 Conversion Scroll  1 Epic Transfer Stone
4	1 Archives Key  1 Memory of Confidence Transformation Costume Box  1 Nightmare Corridor Party Application Frame
5	1000 Mist Core  500 Memory Remnants  5 Starry Remnants
6	50 Power Essences  50 Dim Floating Stones  1 Gold Grimoire
7	1 Archives Key  1 Nightmare Corridor Special Creature Selection Box (Choose 1 out of 7)  1 Nightmare Memory Party Frame
8	1000 Mist Core  500 Memory Remnants  5 Starry Remnants
9	50 Power Essences  50 Dim Floating Stones  1 Epic Transfer Stone
10	1 Archives Key  1 Nightmare Corridor Character Selection Window Background Selection Box  1 Nightmare Corridor Special Title Box

• Use Nightmares coins to buy rewards from Event shop:

Icon	Name	Detail	Price	Purchase Limit
	1 Primordial Fusion Stone Pot	Pot	480	1 per account
	1 Harmonious Mist Cube	N/A	350	1 per account
	1 Mist Halo	N/A	350	1 per account
	1 Gold Grimoire	N/A	220	2 per account
	1 Dimensional Boundary Special Wallpaper Registration Ticket	N/A	300	1 per account
	1 Nightmare Corridor Special Creature Selection Box	N/A	220	2 per account
	1 White Ocean Advanced Dungeon Entry Ticket	N/A	40	1 per week
	1 One-time equipment enchantment selection box	N/A	40	3 per week
	1 Small Universal Material Selection Box	Selectable List - 180 Quad-Color Fused Energy - 135 Burning Cruel King of Dragon's Seals - 90 Brilliant Memory Fragments - 90 Risen Purple Malefic Energy - 75 Pure Five Element Flows	40	2 per week
	300 Memory Remnants	N/A	30	3 per week
	5 Warped Dimension Cube	N/A	30	3 per week
	3 Shout of the Goddess Potion	N/A	5	Unlimited

• Card Encyclopedia achievement reward: Rewards include Dim Floating Stone, Forgotten Light, and Creature Box of Memory of Certainty

References

Event Page

Event Shop Page

Card Collection Reward Page

Mission Experience Rewards