Callisto Protocol is a survival horror game. What you might not expect, however, is that some of its weapons are actually completely unmissable unless you explore thoroughly. Weapons alone mean you can finish the game, but that doesn’t matter because all the stories and optional weapon locations are shown below.
stun baton
The Stun Baton is automatically obtained in the Outbreak chapter and is used as a melee weapon for the rest of the game. You’ll hook this after a room with two giant fans and lots of enemies. You can get the weapon during the shortcut scene by simply crawling through the nearby shaft.
hand cannon
The Hand Cannon is the first ranged weapon automatically acquired and accessible in the Outbreak chapter. Later in the mission, you’ll enter a room where Elias throws some of his pistols. Take it to a nearby Reforge to purchase a Hand Cannon to advance the story.
Skunk Gun
The Skunkgun is created in Reforge using the Skunkgun schematic from the Aftermath chapter. A little further in this chapter you will have to find a way out of the basement. When you are in the area called Basement D3, you come across a fuse box that is not yet operational. Follow a mostly straight path until you reach an area where you have to kill enemies and find a fuse on the floor. At first you might have thought of using this to open a nearby door, but instead go back to the fuse box you saw earlier. Use it there to open the door and crawl through the ventilation shaft here to find the Skunk Gun blueprint in the next room.
riot gun
Riot guns are automatically obtained in lost chapters. After making your way through various snow-covered outdoor locations and some inner corridors, you’ll eventually come across a room where Dani is battling a horde of enemies. Open the door to trigger a cutscene where she hands you this powerful shotgun.
tactical pistol
The Tactical Pistol is created in Reforge using the Tactical Pistol schematics found in the chapters below. Halfway through the chapter, three blind enemies enter a room that converges from the left, right, and front. Take these out quietly, go through the door ahead, and follow the path until you have to jump over the metal shards. Once defeated, you can find the schematic for the Tactical Pistol on the desk to the right of the area.
Assault rifle
Assault Rifles are crafted in Reforge using the Assault Rifle blueprint found in the Colonies chapter. Later in the chapter while exploring the shantytown looking for a security key, in a rundown house on the first floor he reaches a point where he must climb a ladder attached to one to reach the upper section. To do. Once you reach the top, head to the back of the bathroom and pick up the assault rifle blueprint in the sink. Watch out for enemies that will attack you right after.
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