Room 1665 stands as one of the most demanding challenge stages in Vampire Survivors, introduced in the Darkasso update. This confined arena tests players’ survival skills through escalating enemy waves in a linear hallway of rooms. Success grants the coveted Darkasso relic, unlocking new Darkanas and content. This guide details every prerequisite, entry method, survival tactics, and rewards.
Prerequisites: Building Toward the Secrets Menu
Accessing Room 1665 requires the Secrets menu, gated behind specific achievements. Players must first enable Hyper Mode on multiple base stages, unlock Bone Zone, and retrieve the Forbidden Scrolls of Morbane relic.
- Hyper Mode Activation: Survive 30 minutes on Mad Forest, Inlaid Library, Dairy Plant, or Gallo Tower. This defeats the final boss and endures until natural death.
- Bone Zone Unlock: Activate Hyper Mode on any three of the above stages to reveal Bone Zone.
- Forbidden Scrolls of Morbane: Complete Bone Zone to obtain this relic, enabling the Secrets menu for spell inputs.
These steps demand familiarity with core mechanics like weapon evolution and power-up management. New players should prioritize early stages for experience.
Entering Room 1665: The Forbidden Spell
With the Secrets menu available, input the spell forbiddenbox. This instantly adds Room 1665 to the stage selection in main mode. No additional purchases or levels are needed; the stage loads with your last-played character, adding replay variability.

Upon entry, players spawn in a narrow, vertical corridor divided into 16 rooms. Doors block progression, requiring 100 enemy kills per room to advance—totaling 1,600 kills over escalating waves.
Stage Layout and Core Mechanics
Room 1665 confines combat to tight spaces, emphasizing area control and mobility. Key features include:
| Element | Description |
|---|---|
| Room Structure | 16 sequential rooms in a vertical hall; breakable towers yield health, coins, and pickups. |
| Enemy Waves | 100 kills unlock each door; waves intensify with bosses and elites. |
| Revives | One revive available; use strategically mid-run. |
| Arcana Access | Delayed; appears after initial rooms open. |
| Duration | Survive 30 minutes for full clear and achievements. |
Strategy revolves around room-to-room laps to farm candelabras (for passive bonuses) and manage hordes. Enemies respawn aggressively, so constant motion is key.
Optimal Character Choices and Starting Builds
Character selection influences early survival. DLC owners benefit from specialized starters:
- Miang Moonspell (Legacy of the Moonspell): Silver Wind provides damage and healing; evolve to Festive Winds with Pummarola for sustain.
- Queen Sigma: Versatile stats handle late waves, though RNG can challenge her.
- Bat Robbert: Ideal for health-focused Darkanas; build to 665 max health.
Focus on health recovery: Garlic, healing evolutions, and Sarabande of Healing Arcana. Avoid glass-cannon builds due to spatial limits.
Weapon and Power-Up Strategies by Phase
Early Rooms (1-5): Establishment
Prioritize crowd control. Grab nearby chests for levels, aiming for:
- Whip or Magic Wand for fast clears.
- Health passives and armor.
- Run laps to destroy towers for chicken heals.
Mid Rooms (6-10): Escalation
Waves introduce elites. Evolve weapons:
| Weapon | Evolution | Key Pairing |
|---|---|---|
| Silver Wind | Festive Winds | Pummarola |
| Garlic | Soul Eater | Pummarola |
| La Borra | Trinity | Health passives |
Activate freeze effects to group EXP gems. One revive here resets pressure.
Late Rooms (11-16): Boss Onslaught
Final sections spawn mini-bosses every minute post-Darkasso. Circle the full hallway, prioritizing health pickups. Darkasso (center of room 16) auto-collects on contact, enabling new Darkanas.
Darkasso Relic and Unlocking Darkanas
Reaching room 16’s center yields the Darkasso relic. This unlocks 12 Darkanas via specific Room 1665 runs. Examples:
- Darkasso: Extra bosses every minute.
- Health-loss explosions (665 max health with Bat Robbert).
Alternative: Cast “darkassami” in Forbidden Scrolls for instant relic. Farm Darkanas in subsequent runs; RNG demands multiple attempts.
Advanced Tips and Common Pitfalls
- Mobility: Dash through walls if clipped; maintain speed.
- RNG Mitigation: Reroll levels for health/weapons.
- No Eggs Needed: Candelabras respawn naturally.
- Achievements: “EXTRA: Room 1665” for completion.

Frequently Asked Questions (FAQs)
How do I unlock the Secrets menu?
Hyper Mode three base stages → Bone Zone → Forbidden Scrolls of Morbane.
What’s the Room 1665 code?
forbiddenbox in Secrets.
Can I choose my character?
No, it uses your last-played one. Swap stages beforehand.
How many kills per room?
100 enemies, 16 times.
Is Room 1665 required for 100% completion?
Yes, for Darkasso and related trophies/achievements.
Conclusion: Triumph in the Darkasso Era
Conquering Room 1665 elevates Vampire Survivors mastery, blending precision, builds, and endurance. With practice, its rewards transform gameplay. Experiment with builds and persist through RNG for all Darkanas.
References
- How to Unlock Room 1665 Vampire Survivors Stage — Siliconera. 2024. https://www.siliconera.com/how-to-unlock-room-1665-vampire-survivors-stage/
- UNLOCKING the Room 1665 & finding the DARKASSO item — YouTube (K51RDpK2Jtk). 2024.
- Darkasso – Vampire Survivors Wiki — Fandom Wiki. 2024. https://vampire-survivors.fandom.com/wiki/Darkasso
- Vampire Survivors – How to unlock Room 1665 — YouTube (EiehxQdz8_8). 2024.
- Vampire Survivors – Room 1665 DLC Trophy Guide — PSNProfiles. 2024. https://psnprofiles.com/guide/20371-vampire-survivors-room-1665-dlc-trophy-guide

