The Night Sword is one of the most intriguing weapons introduced in the Legacy of the Moonspell expansion for Vampire Survivors. Offering high retaliatory damage and critical hit potential, this blade transforms into the formidable Muramasa when paired with the proper passive item. Understanding the exact requirements for unlocking and evolving this weapon allows players to maximize their build potential during intense endgame runs.
Unlocking the Base Night Sword
Before you can evolve the weapon, you must first unlock the Night Sword by finding it as a pickup within the Mt. Moonspell stage. Alternatively, playing as Megalo Syuuto Moonspell grants you access to this blade immediately as a starting item. Mastering its unique attack patterns early on helps pave the way for a smooth transformation later in your run.
Requirements for Evolving into Muramasa
To upgrade the Night Sword into Muramasa, you must bring the weapon up to level 8 during your run. In addition to maxing out the blade, you need to acquire the Stone Mask passive item and level it up to its maximum rank of 5. Unlike some evolutions that only require a passive item to be present, this specific upgrade strictly demands a fully maxed Stone Mask before opening a post-10-minute boss chest.
Mechanics and Benefits of the Muramasa Evolution
Evolving the weapon into Muramasa dramatically increases your offensive capabilities by introducing combo finishers and critical strikes. The blade's retaliatory strikes scale directly with your Greed stat, turning an otherwise economic passive into a massive damage booster. Furthermore, completing this evolution for the very first time rewards your account with a bonus payout of 50,000 gold.
Optimizing Your Build for Maximum Performance
Maximizing the potential of Muramasa requires leaning into passive items that boost both area of effect and damage output. Selecting items like Spinach and Duplicator enhances your overall strike range and attack frequency across the screen. Balancing aggressive positioning with intentional damage intake enables you to trigger retaliatory slashes constantly throughout late-game swarms.
