Slayers 2 Serpent Keys Guide: All 20 Locations and Nightfall Serpent Katana!

The Serpent Keys in Slayers 2 are important items required to unlock the Serpent Box and obtain the Nightfall Serpent Katana V2 schematic. Finding these keys can take some time because they are scattered underwater across several areas, including Wilderness, Mistfall Harbor, Shoreline, and the deep ocean trenches.

There are 20 Serpent Key locations to search, but you can only carry one key at a time. You will also need to deal with the game’s RNG system, which means the key that opens the Serpent Box for one player might not work for another. This guide covers all 20 locations, how to find the box, and the materials needed to craft the Nightfall Serpent Katana.

Tips for Finding Serpent Keys in Slayers 2

Before diving into the water, prepare your character to make the search easier. Most Serpent Keys are hidden underwater, where poor visibility and limited breathing time can slow down your progress. There are no mandatory requirements to collect them, but a few items and settings can make the process much faster.

Here are some tips to follow before starting your search:

• Lower your graphics settings: Reducing graphics quality can make it easier to spot keys underwater.
• Buy a Horse: Use it to travel between locations faster when searching for keys.
• Purchase the Mistfall Harbor Shrine: This helps you return to the area without wasting too much time.
• Set your spawn point: Choose Mistfall Harbor as your spawn location so you can return quickly after collecting a key.
• Bring Breathing Potions: Purchase them from Alchemist Meku to spend more time underwater.
• Equip a Lantern: Use the extra light to improve visibility while exploring submerged areas.
• Mark the Serpent Box: Find and mark the box before collecting keys so you can return to it easily.

It is also recommended to search during daylight. Underwater visibility becomes extremely poor at night, making it harder to identify small objects on the seabed. Since you can carry only one Serpent Key at a time, prepare to return to your spawn point frequently.

All 20 Serpent Key Locations in Slayers 2

The Serpent Keys are spread across different parts of the map, with several located around Mistfall Harbor and others hidden farther from the shore. You need to dive underwater and inspect the seabed, cliffs, walls, and structures to find them. Use the following list to check each known location.

Wilderness Serpent Key Locations

There are six Serpent Keys to search for in the Wilderness area. Most of them are found underwater near rocky terrain, isolated shelves, and other objects on the ocean floor. Explore these spots carefully because some keys can blend into the surrounding environment.

1. Search an isolated underwater shelf.
2. Check beside rocky walls fitted with metal grates.
3. Dive into deep water near the bottom of a cliff.
4. Inspect the ocean floor among other nearby keys.
5. Look along the seabed close to two other keys.
6. Search the ocean floor alongside nearby keys.

Mistfall Harbor Serpent Key Locations

Mistfall Harbor contains eight Serpent Key locations, making it one of the most important areas to explore. Several keys are hidden beneath watermill structures, along harbor walls, and around submerged platforms. Since you can use Mistfall Harbor as your spawn point, searching this area first can also make repeated trips more convenient.

7. Follow the underwater route along the seabed.
8. Search beneath the main waterwheel.
9. Explore the submerged section of the watermill.
10. Check a sandy patch farther away from the shore.
11. Inspect an underwater corner of the harbor wall.
12. Search the seabed near the concrete platform.
13. Follow the submerged foundation wall.
14. Look beyond the row of submerged pillars.

Shoreline, Open Ocean, and Harbor Dock Locations

The remaining Serpent Keys are spread across the shoreline, open ocean, and harbor dock. Some are located in relatively shallow water, while others require you to dive deeper or explore structures beneath the surface. Check each area before moving on to the deep trenches.

15. Shoreline: Search the shallow water near the beach.
16. Open ocean: Dive to the base of the underwater cliff.
17. Harbor dock: Look beneath the wooden pier.
18. Harbor dock: Inspect the wooden cage structure underwater.

Deep Trench Serpent Key Locations

The final two known locations are inside deep trenches. These areas can be harder to search because of their depth and visibility, so bring Breathing Potions and a Lantern before heading down. Inspect the sandy bottom carefully to avoid overlooking the keys.

19. Search the sandy floor of the deep trench.
20. Explore the sandy bottom of the blue-water trench.

Remember that these are the 20 known locations to check, not a guarantee that every key will work with your Serpent Box. The unlocking process uses RNG, so you may need to collect several keys before finding the correct one.

Serpent Box Location in Slayers 2

The Serpent Box is located inside Dreamfall Hollow, near Mistfall Harbor. You need to find this box and use a Serpent Key to unlock it, allowing you to obtain the Nightfall Serpent Katana V2 schematic. Finding the box before collecting keys is a good idea because you can then return directly to it after each trip.

Follow these steps to reach the Serpent Box:

1. Travel to the Mistfall Harbor spawn point.
2. Head toward the Jugg NPC.
3. Enter the Tori Gate beside Jugg.
4. Continue forward until you see a slope on your left.
5. Climb the slope and follow the path covered in leaves.
6. Walk through the leaves to enter the deep caves.
7. Turn right after entering the caves.
8. Look for a set of spikes and move toward them.
9. Jump upward toward the nearby light source.
10. Find the Serpent Box beside the light.

Once you reach the box, try using your collected Serpent Key. If the key is incorrect, it will snap off inside the box, meaning you must find another one and try again. Because of this mechanic, you should collect keys efficiently and keep track of your progress rather than expecting the first key to work.

How to Craft the Nightfall Serpent Katana in Slayers 2

After unlocking the Serpent Box, you can obtain the Nightfall Serpent Katana V2 schematic. However, you still need several crafting materials before you can create the weapon. The required materials include a Serpentine Katana, Metal Scraps, Silk Threads, and Money.

Here is the complete crafting requirement:

• 1x Nightfall Serpent Katana Schematic
• 1x Serpentine Katana
• 500x Metal Scraps
• 500x Silk Threads
• 500,000x Money

Make sure you have collected enough materials before visiting the crafting location. If you plan to upgrade the weapon to higher tiers, you will also need rarer resources, including Nightfall Forged Ingot and Nightfall Reinforced Plating. These materials can be obtained from Ouwigahara Chests, so you may need to spend more time farming after crafting the base weapon.

Nightfall Serpent Katana Stats in Slayers 2

The Nightfall Serpent Katana is a duelist weapon designed for an offensive playstyle. Its base stats provide a combination of damage, blocking ability, stamina, and block regeneration, making it a useful option for players who want to deal damage while maintaining some defensive strength.

Here are the listed base stats for the Nightfall Serpent Katana:

• Damage: +4
• Damage Factor: 1.17x
• Block Points: +4.6
• Block Regen: 2.04x
• Max Stamina: +5

These bonuses make the weapon worth considering for players who want a stronger katana for late-game content. However, your overall performance will also depend on your Breathing style, upgrades, and preferred combat approach.

Is the Nightfall Serpent Katana Worth Crafting?

Yes, the Nightfall Serpent Katana is worth considering, especially if you use Serpent Breathing as your primary Breathing style. Its damage bonus and 1.17x Damage Factor provide offensive benefits, while the Block Points and Block Regen bonuses offer additional defensive support during combat.

The biggest challenge is collecting enough Serpent Keys to open the box and obtaining all the required crafting materials. Since incorrect keys break when used, you should be prepared to repeat the search several times. Players in the late game should also consider obtaining a Nightfall or Firstlight weapon to improve their combat options.

Finding all 20 Serpent Key locations in Slayers 2 is an important step toward unlocking the Serpent Box and crafting the Nightfall Serpent Katana V2. Start by searching Mistfall Harbor and the nearby Wilderness, then explore the shoreline, harbor docks, open ocean, and deep trenches for the remaining keys.

Remember to bring Breathing Potions, equip a Lantern, and search during daylight to make underwater exploration easier. Once you unlock the box and gather the required crafting materials, you can add the Nightfall Serpent Katana to your weapon collection and use its offensive bonuses to support your late-game progression.