To open the Halloween instance every 4 hours you have to kill the monsters Whispering and Pumpkinring 10.000x times on fields/dungeons.
As soon as you have killed them, at the next event time you will get an announcement that the portal to the Halloween map is open in Prontera.

In Prontera the NPC Ghost Cube tells you the counter of the missing monsters to start the instance.
You have 5 minutes to join. You must be at least level 125.

You have to kill at least 100 monsters to enter. The souls are consumed, so you need to collect it again to enter next time.
It doesn’t matter which character you use to farm souls, you can join with any character on the whole master account.
Please keep in mind that the Soul Collector ranking is character-based, so you should always use the same character there!
The monsters you have to kill are Pumpkinrings and Whisperings, they are on fields/dungeons.
Those monsters drop Pumpkin Candy Holder (22838) .
The portal closes after 5 minutes, if you are in the instance and die, you can not join again when you leave the map!
You have 20 minutes to kill the instance MVP.

Note: Only your main account will receive the reward.
Halloween Event Box (41014) contains:
100%:

• 20x GemCoin (50000) and
  
• 30x Event Coin (25655) and
  

60%:

• 2x Bubble Gum (12210) or
  
• 2x [Bound] Gym Pass (6846)
  

35%:

• 2x Blacksmith's Blessing (6635) or
  
• 2x GemstoneRO Voucher (50003)
  

5%:

• 1x C. Niflheim Key (purple) (480119) or
  
• 1x C. Bloody Murderer Knife (480493) or
  
• 1x C. Baphomet's Scythe (480436)

Each category adds ups so you could get an item from each category if you're lucky.
For every additional 1000 souls consumed, you will receive one extra event box, for example:

• Join with 100 souls = 1 box
• Join with 1100 souls = 2 boxes
• Join with 2100 souls = 3 boxes

Every Soul counts! Here are we again for our Soul Collector ranking!

Rewards:
Top 10% of all Participants:	C. Juncea Wing (480488)
1st Place:	1x Alternate Outfit Coupon (50010) 1x Infinite Giant Fly Wing Box (2h) (100874) 50x Blacksmith's Blessing (6635)
2nd Place:	1x Alternate Outfit Coupon (50010) 1x Infinite Giant Fly Wing Box (2h) (100874) 40x Blacksmith's Blessing (6635)
3rd Place:	1x Alternate Outfit Coupon (50010) 1x Infinite Giant Fly Wing Box (2h) (100874) 30x Blacksmith's Blessing (6635)
4th Place:	1x Alternate Outfit Coupon (50010) 1x Infinite Giant Fly Wing Box (1h) (23582) 20x Blacksmith's Blessing (6635)
5th Place:	1x Alternate Outfit Coupon (50010) 1x Infinite Giant Fly Wing Box (30min) (17608) 15x Blacksmith's Blessing (6635)

In the heart of spooky Prontera the streets are not as safe as they once were. Strange rotten dirt piles have begun appearing all over town, releasing a foul stench that warns of danger. Travelers should tread carefully, for those who dare to step onto one may awaken what lies beneath.
From within the piles emerge restless Ghouls, creatures that have made these mounds their nests. Unlike ordinary monsters, these Ghouls seem oddly affectionate in their own terrifying way. They eagerly chase after adventurers, hoping to sink their teeth into anyone who crosses their path.
Once a Ghoul has been defeated, it will return again. At the next hour, 30 minutes past, a new Ghoul will spawn at a different location. After all, they are undead, and it seems we will never truly get rid of them.
Stay alert, keep your weapons ready, and beware of where you walk, for in spooky Prontera even the ground itself could be your enemy.

The following costumes can be crafted in our Fashion Paradise.

NPC Witchy (gem_mark_in 64, 383)
Headgear	Recipe
C. Amulet Paper Doll (420016)	1x Poring Egg (9001) , 200x Monster's Blood (6694) , 200x Cursed Seal (7442) , 1x Shadow Walk (2426) , 150x Event Coin (25655)
C. Big Evil Druid Hat (62907)	1x Drops Egg (9002) , 250x Black Powder (6245) , 50x Helm of Dullahan (7209) , 10x Unsent Letter (7644) , 150x Event Coin (25655)
C. Evil Zelda Chicken (20190)	1x Poporing Egg (9003) , 250x Armor Piece of Dullahan (7210) , 150x Bat Cage (7214) , 1x Skeleton Card (4025) , 150x Event Coin (25655)
C. Batman Helmet (62809)	1x Lunatic Egg (9004) , 250x Dark Piece (6089) , 3x Elven Ears (2286) , 15x Tooth of Jitterbug (6719) , 150x Event Coin (25655)
C. Dark Master (420010)	1x Picky Egg (9005) , 250x Poisonous Powder (25277) , 250x Bloody Love Letter (25257) , 3x Giant Caput Card (300249) , 150x Event Coin (25655)
C. Evil Bapho Horns (62905)	1x Chonchon Egg (9006) , 150x Bloody Rune (7563) , 150x Fragment of Darkness (7798) , 150x Piece of Black Cloth (7205) , 150x Event Coin (25655)
C. Evil Bone Helm (62906)	1x Steel Chonchon Egg (9007) , 150x Worn Out Page (1097) , 50x Bloody Letter (7643) , 150x Golden Ornament (7435) , 150x Event Coin (25655)
C. Evil Orc Hero Helm (62908)	1x Hunter Fly Egg (9008) , 250x Zenorc's Fang (1044) , 250x Wing of Red Bat (7006) , 150x Clattering Skull (7752) , 150x Event Coin (25655)
C. Eyes Of Darkness (19877)	1x Savage Babe Egg (9009) , 500x Tough Scalelike Stem (7012) , 3x Magician Hat (5045) , 3x Crystal of Darkness (7799) , 150x Event Coin (25655)
C. Gemini-S58 Eyes (blue) (19158)	1x Baby Desert Wolf Egg (9010) , 150x Tear Gas (6215) , 100x Small Dragon Bone (25766) , 3x Thorn Staff of Darkness (1636) , 150x Event Coin (25655)

NPC Ludy (gem_mark_in 69, 377)
Headgear	Recipe
C. Hollow Mask (62987)	1x Munak Egg (9018) , 200x Pumpkin Lantern (7225) , 3x Dark Bible (100796) , 3x Disguiser Card (300244) , 150x Event Coin (25655)
C. Jason Mask (63005)	1x Dokebi Egg (9019) , 150x Swordman Soul (6814) , 5x Foolishness of the Blind (7021) , 5x Angry Snarl (5113) , 150x Event Coin (25655)
C. Light Darkness Crown (19751)	1x Sohee Egg (9020) , 200x Rune of Darkness (7511) , 100x Decomposed Rope (7218) , 3x Pierrotzoist Card (300247) , 150x Event Coin (25655)
C. Little Devil's Horn (19915)	1x Isis Egg (9021) , 150x Merchant Soul (6815) , 50x Fluffy Cloth Piece (25775) , 5x Intrepid Giearth Card (300236) , 150x Event Coin (25655)
C. Loki Mask (19615)	1x Deviruchi Egg (9023) , 150x Magician Soul (6817) , 1x Lindy Hop [2] (21018) , 3x Wraith Dead Card (4189) , 150x Event Coin (25655)
C. Lude Hood (20173)	1x Bongun Egg (9025) , 150x Bookclip in Memory (7015) , 150x Thief Soul (6816) , 3x Ogretooth Card (4254) , 150x Event Coin (25655)
C. Lude Mask (19918)	1x Picky Egg (9005) , 250x Tooth of Bat (913) , 150x Acolyte Soul (6819) , 3x Teddy Bear Card (4340) , 150x Event Coin (25655)
C. Marduk Hat (63036)	1x Marionette Egg (9043) , 150x White Powder (6247) , 3x Gaia's Worn Hat (1000514) , 3x Lude Card (4193) , 150x Event Coin (25655)
C. Ritual Aura (purple) (60492)	1x Shinobi Egg (9044) , 150x Archer Soul (6818) , 1x Juliette D Rachel [2] (28010) , 3x Loli Ruri Card (4191) , 150x Event Coin (25655)
C. Whisper's Blessing (20547)	1x Whisper Egg (9045) , 10x Nab's Ring (2887) , 3x Aigu's Floral Bracelet [1] (2989) , 3x Blue Moon Loli Ruri Card (300245) , 150x Event Coin (25655)

We have decided to make costumes from previous events available after a year.
That's why we are introducing Event Coins that can be farmed and spent in any event.
Event Coins are available from Whispering, Pumkinring and Hallowring.
Therefore, you will be able to buy the costumes from Halloween 2021 afterwards at our NPC Spuky (gem_mark_in 62, 389) for 150x Event Coin (25655) .

Costumes
2021			2022			2023
C. Bandage (white) (19825)	C. Witch Hat (black) (20395)		C. Evil Druid Hat (red) (19824)	C. Earth Master (31885)		C. Brain (yellow) (20063)	C. Gi No Kamen (31940)
C. Cat Cape (black) (440006)	C. Wanderer's Sakkat (purple) (31415)		C. Deviruchi Headphone (red) (20175)	C. Veil (black) (31912)		C. Wizardry Hat (red) (31809)	C. Darkness Horn (31947)
C. Gram Peony (black) (20450)	C. Witch's Cat Hat (31832)		C. Mad Hatter (black) (31088)	C. Devil's Eye (31946)		C. Elder Devil Horn (19290)	C. Illusion Eyes (31948)
C. Cat Eye (19912)	C. Zombie Mask (31853)		C. Witch's Cloak (purple) (31852)	C. Cap of Blindness (420070)		C. Taboo Curse Scroll (19805)	C. Carefree face (410062)
C. Crown of Victory (20036)	C. Chocolate Mushroom Wig (31855)		C. Witch's Pumpkin Hat (19903)	C. Cat Footprints (420077)		C. Secret Society Hood (19905)	C. Soul Silk (410103)
C. Owlduke Silk Hat (20037)	C. Magic Helm (black) (31884)		C. Niflheim Bunny Hat (20398)	C. Familiar Aura (420078)		C. Screw stuck in head (19906)	C. Skull Cap (black) (19904)
			C. Demon God Ghost's (20430)	C. Rocking Short (purple) (420111)		C. Judge Hat (19943)	C. Alphonse Helm (20038)
			C. Combat Vestige (20456)	C. Protection Wings (480199)		C. Pumpkin Head (31581)	C. Hand of Fate (black) (20247)
			C. Grim Reaper Protection (20798)	C. Demon Crown (400158)		C. Yawata Seal (31735)	C. Pumpkin Toque (20394)
			C. Exploding Flame (red) (31056)	C. Bloom Afro (31464)		C. Dullahan Mask (31819)	C. Fascinating Phantom Mask (19907)
						C. Ghost Cat Mask (31824)	C. Hill Wind Head (yellow) (20300)
						C. Devil's Tongue (31825)	C. Mosaic (20389)
2024
C. Jack Castle Bat (black) (61380)	C. Skull Captain Hat (black) (61226)
C. Noble Handkerchief (yellow) (31726)	C. Wicked Hat (62410)
C. Gatesof Nether World (31952)	C. Dragon Helm (red) (62233)
C. Ponytail Hair (red) (420057)	C. Eyepatch Cat Hood (61134)
C. Ancient Dragons Magic Spear (480282)	C. Vengeful Ghost Ears (410276)
C. Guardian Helm (black) (61888)	C. Pumpkin Mask (62160)
C. Rabbit (black) (410226)	C. Ghoul Mask (410059)
C. God of Thunder (60410)	C. Angry Eyebrows (61294)
C. Ranger Half-Up (light green) (420293)	C. Twinkling Bloody Eye (410278)
C. Skull Bowler (61225)	C. Thorn Scarf (420171)
C. Asia Master Dragon (golden) (400357)	C. Robo Eyes (20213)

The following costumes can be purchased in our Fashion Paradise at FP Halloween (gem_mark_in 75, 368).

Halloween
Category 1	Category 2	Category 3	Category 4
C. Dogu Wing (beige) (90107)	C. Broom Riders (90297)	C. Small Devil Wings (black) (64059)	C. King Ghostring (61789)
C. Fallen Wing (90112)	C. Cat Witch (purple) (90301)	C. King Deviling (61710)	C. Ghostring on Head (62953)
C. Fiend Wing (90113)	C. Lunar Eyes Coat (gold&black) (61060)	C. Deviling Beret (61711)	C. Ghostring Tall Hat (31123)
C. Great Devil (brown) (20762)	C. Deviling Scarf (61713)	C. Deviling Mascot (61712)	C. Ghost Holiday (red) (31314)
C. Gryphon Wing (white) (90147)	C. Timed Darkness Wings (61244)	C. Deviling Sunglasses (61714)	C. Jjakk (31387)
C. Night Spell (90390)	C. Wyvern Wings (61275)	C. Deviling Rider (61715)	C. Halloween Short Cat Ears (31833)
C. Pumpkin Wing (purple) (90407)	C. Haunting Skull (410201)	C. Ghostring Rider (61784)	C. Halloween Long Cat Ears (31834)
C. Dragon's Wing (red) (90245)	C. Halloween Witch Hat (purple) (61898)	C. Ghostring Beret (61785)	C. Mysterious Cat Hood (cyan) (61185)
C. Gorgoyle Wing (black&red) (90133)	C. Vampire Sidehat (red) (62359)	C. Ghostring Mascot (61786)	C. Broom Rider Hat (61447)
C. Cursed Sword (green) (90277)	C. Hallowed Cape (purple) (90365)	C. Ghostring Sunglasses (61788)	C. Sweet Pumpkin Bag (63097)