Both of these specialist weapons are extremely effective against zombies. Also, crafting them is necessary for obtaining certain trophies and achievements, if you’re going for a 100% walkthrough on this map.
How to get Skull of Nan Sapwe
First, you need to find the ritual table with four skulls located in the area with four pillars. You can find this area in the south-eastern corner of the map.
You will notice that each skull has a corresponding glowing symbol attached to it. These symbols will change every time you start a new game, so try to finish this mission in one sitting.
You need to remember or write down the symbols that belong to each of the four skulls and then put all four skulls in your inventory.
Now, you need to find four ritual stands that are scattered around the map and place each skull on its corresponding stand. Here are the locations of all four ritual stands:
The first one is located in the center of the spawn area at the broken wall.
The second one is below the plane propeller trap.
The third one is at the bottom of the zipline at the crates.
The fourth one is located inside the bunker.
After you place the skulls on the stands, you will need to defend them from the swarms of zombies. When all enemies will be killed, the skulls will light up and you can put them back in your inventory.
Then, go back to the first ritual table and put the skulls back on their corresponding places. After you do this, the secret passage will open up and you will gain access to the chamber with the Skull of Nan Sapwe inside.
After you activate the Skull of Nan Sapwe, you have to be ready to kill a bunch of gatekeepers before your newly acquired weapon will fully charge.
The Skull of Nan Sapwe has two attack modes: Vaporize and Mesmerize.
Vaporize mode sends all enemies up in the air and turns them into dust.
Mesmerize mode freezes all nearby enemies as long as the weapon has charge.
How to get KT-4/Kusanagi-no-Tsurugi
First, you need to activate the generator in Lab A that is located in the western part of the map.
Then, find a controller to a cage on the second floor and lower it down to the bottom of the floor. As soon as it hits the bottom, the cage will open and release the purple mist. This mist will attract spiders that will be trapped inside the cage.
After that, go back up and activate the cage once again for it to go back up. When it comes back, the robot hand will extract a vial of poison from the spider.
When you’re finished, go to the bunker and find the door that is located in the farthest right corner. It will require 1500 points for you to open it, so you need to earn them before going there.
After you gain access to the room behind the door, you will see a flooded area where you have to jump dive. Swim to the very end of the flooded area and locate a plant that is required for crafting the KT-4 weapon.
Then, get out of the bunker and head straight to Lab B. There you should be looking for a very specific zombie with a green glow on his body. Kill him, and he will drop the last item required for KT-4.
When you will have all three items in your inventory, go back to the bunker and find a wooden crafting table to finally build this amazing new weapon.
KT-4 or Kusanagi-no-Tsurugi shoots liquid acid that makes zombies and spiders explode into the smallest pieces.
As you see, crafting these two new weapons is not that hard, so make sure to invest some time and add them to your stash.
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