Hey everyone! We're back with another guide in the "Mythos Conquest" dungeon series. Simply put, Mythos Conquest serves as the game's main resource dungeon, where you can obtain key materials for Luminary development. This time, we'll be looking at Treasure Heist, the Gold dungeon.
In Treasure Heist, only melee Luminaries (Guardians, Assassins, and Warriors) can be deployed. At Difficulty 1, you can only deploy two Luminaries. Additional slots will unlock as you progress, going up to a maximum of 6 slots.
The victory condition is to defeat the Dwarf King within a time limit, so your team must have strong damage output, ideally those with AoE (area-of-effect) skills.
To sum up, in the early stages, prioritize Warriors and Assassins as your main DPS roles, while Guardians serve better as support or filler units in mid-to-high-difficulty stages.
Difficulties 1–4: Deploy any 2–3 of the following Luminaries
Difficulties 5–7: Deploy any 4–5 of the following Luminaries
Difficulty 8 and above: Deploy 6 Luminaries
Alternative Luminaries
Here's a brief overview of the Treasure Heist gameplay.

Let's start with the dungeon rewards:
- First Clear Reward: Diamonds
- Regular Rewards: Gold (the higher the difficulty, the more you earn)
- Milestone Rewards: Diamonds and Gold (claimable after completing a set number of runs)
1. Treasure Heist offers 20 difficulty levels. You can only challenge them sequentially. Once you win, the next level becomes available until you reach the greatest unlocked difficulty.
2. After clearing a difficulty for the first time, the "Sweep" feature unlocks, allowing you to quickly claim its rewards. (Tip: Before sweeping, check your Main Story progress. If advancing the story can unlock a higher dungeon difficulty, make sure to clear that first to avoid wasting resources.)
3. The base "Sweep" count starts at 1 per day. Purchasing the Adventurer Privilege Card grants +1 daily attempt.
That wraps up the Treasure Heist guide! Hope this helps, and stay tuned for upcoming guides on other Mythos Conquest dungeons!