The Tides of the Foscari expansion for Vampire Survivors introduces players to intricate puzzles alongside its classic horde-survival gameplay. Among these challenges, shattering the emerald barrier in the woodland realm stands out as a major milestone for stage progression. Successfully completing this objective grants access to deeper, darker stages hidden beneath the surface.
Prerequisites for Breaking the Seal
Before attempting to break the green crystal, players must unlock the archer character Keitha Muort. Keitha is unlocked by surviving for fifteen minutes in any stage using Maruto Cuts after evolving his signature weapon. Once Keitha is available, you must select her for a run on the Lake Foscari map to initiate the quest process.
Evolving Flash Arrow into Millionaire
To destroy the barrier, Keitha must evolve her starting weapon, the Flash Arrow, into its ultimate form known as Millionaire. Achieving this evolution requires leveling Flash Arrow to its maximum rank alongside a passive Clover item. Opening a treasure chest dropped by a boss after the ten-minute mark will then trigger the weapon transformation.
Locating and Destroying the Emerald Crystal
Once Millionaire is in your inventory, a question mark icon will appear on the map pointing toward the lake area. Follow the dirt path northeast toward the shoreline where a glowing green crystal sits on a small patch of land extending into the water. Approaching the barrier and attacking it with Millionaire will break the seal, unlocking the Abyss Foscari stage for future runs.
Tips for a Successful Run
Navigating Lake Foscari can be tricky due to dense trees and aggressive enemy waves that quickly surround underprepared players. Equipping movement speed boosts and strong area-of-effect weapons early on ensures Keitha survives long enough to gather her required items. Prioritizing luck stats also improves chest drop quality, making it much easier to complete your build efficiently.