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Castle Acula – A Friendly Duel

Castle Acula – A Friendly Duel is the dungeon of Castle Acula: 5 rooms through the halls of the castle, from level 32. At the end, in the tower hall, Dr. Acula waits for his duel. It is the first dungeon whose boss fight your party can join.

Go to the courtyard of Castle Acula and open the dungeon gate. It shows whether you are invited. You need at least level 32 and Dr. Acula’s invitation from the quest “A Friendly Duel”. After an Ascension the castle forgets you, and you earn the invitation again.

  • Each day (UTC) you have 3 free entries.
  • With no free entries left, entering uses up one Invitation Card. Invitation Cards are a rare catch in the castle moat, drop from some monsters, can be in the chest, are sold at the market in Dawnmere Village and are one of Tessa’s rewards at The Last Bite.

The run works like the Sunken Shrine: your HP carry over from room to room, nothing regenerates, and leaving or losing ends the run. You can use items from your bag between rooms.

Entrance hall, ballroom and portrait gallery each roll a monster from the castle’s pool, weakened for the dungeon. In the library the The Steward guards the way; in the tower hall Dr. Acula waits.

Rooms of Castle Acula – A Friendly Duel
RoomKindMonsterLevel
1Entrance HallRoomWeakened for the dungeon: Attack × 30%, HP × 90%Your level, kept within 32–48
2BallroomRoomWeakened for the dungeon: Attack × 30%, HP × 90%Your level, kept within 32–48
3Portrait GalleryRoomWeakened for the dungeon: Attack × 30%, HP × 90%Your level, kept within 32–48
4LibraryEliteThe StewardYour level (kept within 32–48) +1
5Tower HallBossDr. AculaYour level (kept within 32–48) +2
Data from game version 0.3.0 · f8531c1 (2026-10-01)
Monsters
Stats (lowest level)Drops (chance)
Castle BatBeastsAbilities: Double Strike30–36Wood
  • HP 710 (+11 per level)
  • Attack 370 (+30 per level)
  • Defence 30 (+1.6 per level)
  • Speed 32 (+0.6 per level)
460+8 per level20–38
Blood SpiritSpiritsAbilities: Life Drain32–39Fire
  • HP 765 (+25 per level)
  • Attack 470 (+37 per level)
  • Defence 28 (+1.5 per level)
  • Speed 20 (+0.5 per level)
495+8 per level21–40
Blood ServantUndeadAbilities: Cleaver Swing34–42Earth
  • HP 715 (+20 per level)
  • Attack 800 (+56 per level)
  • Defence 46 (+1.8 per level)
  • Speed 12 (+0.3 per level)
535+8 per level23–44
Eternal GuestUndeadAbilities: Life Drain30–50Water
  • HP 800 (+20 per level)
  • Attack 700 (+45 per level)
  • Defence 40 (+1.8 per level)
  • Speed 16 (+0.4 per level)
700+10 per level18–36
The StewardEliteUndeadAbilities: Silver Tray, Enrage30–50Earth
  • HP 1,100 (+28 per level)
  • Attack 260 (+20 per level)
  • Defence 60 (+2.2 per level)
  • Speed 10 (+0.3 per level)
1,500+40 per level45–90
Dr. AculaBossUndeadAbilities: A Little Bite, Midnight Lunge, Bloodlust, Bat Swarm34–52Metal
  • HP 1,150 (+30 per level)
  • Attack 205 (+43 per level)
  • Defence 58 (+2 per level)
  • Speed 28 (+0.5 per level)
5,000+220 per level0
Data from game version 0.3.0 · f8531c1 (2026-10-01)

The first four rooms are yours alone. When you reach the tower hall, the duel against Dr. Acula becomes a party fight: party mates who are at Castle Acula can join it from their party card, like any other group fight.

  • A guest needs the dungeon’s minimum level and pays their own entry: a free daily entry, or an Invitation Card. If the join lapses or they back out, they get the entry back.
  • Dr. Acula grows stronger with every fighter, as in every group fight, and his bat swarm hits the whole party.
  • If you win, everyone with a claim to the loot opens their own chest, and the win counts for each guest (quests, soul points, achievements).

Every hit of Dr. Acula heals him a little, so burst damage beats a slow fight. Every few actions he announces a heavy lunge with his rapier: defend or heal when you see it coming. Below a part of his HP he attacks harder, so save a potion for the end of the fight, and bring friends for the guest duel. See Monster abilities for the exact numbers.

Gold, materials, a chance for an Invitation Card, one rare piece of gear and a small chance for a piece of the set Acula's Evening Wear. See Sets.

Chest of Castle Acula – A Friendly Duel
RewardAmountSuccess chance
Gold180–320100%
Spirit Stone3–5100%
Ember Shard3–6100%
Invitation Card110%
Crimson Silk15%
Crimson Rapier exactly one gear piece125%
Ballroom Mail exactly one gear piece125%
Bloodglass Pendant exactly one gear piece125%
Nightfall Band exactly one gear piece125%
Data from game version 0.3.0 · f8531c1 (2026-10-01)