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In theLies Of P,Legion Arms are special tools that P uses in combat, and these prosthetic arms give him unique abilities. To use them, you have a separate yellow meter that goes down whenever you use them, and you can only refill this meter by using a Legion Magazine item or resting at a Stargazer.
In the game, there are a total of eight Legion Arms. Four of them you get automatically as you play through the game. However, if you want the other four, you’ll need to find the item needed to craft them, which is called a Legion Plug.

Legion Plug Location #1
The first Legion Plug in the game can be foundat St. Frangelico Cathedral Chapel. As you progress, you’ll need to climbusing ladders and wooden structures to ascend,and eventually, you’ll encounter a brazier that unlocks access totheCrafted Cryptic Vessel.
Afterward, make a leap to the other sideand head to the right,where you’ll spot a lever. When you activate it, the wooden structures on the rightwill change direction, creating a shortcut.

Now,take a jump down to the wooden structure before it rises again, and you’ll notice a platform down on your left, where you’ll find a chest and two enemies. After defeating them,loot the chest to obtain your very first Legion Plug.
Legion Plug Location #2
The second Legion Plug can be found at theRosa Isabelle Street Entrance. Starting from the Stargazer, proceed normallyuntil you come to a point where you need to cross a small bridge to enter a building.
Inside, you’ll notice an exit to the right, but instead,go further and take another right and drop down through a hole in the ground. Exit this room and look for another entrance on your right, which will lead youto a set of stairs that will take you to the upper floor.

Here, you’ll discovera chest that containsanother Legion Plug.
Legion Plug Location #3
You can find the third Legion Plug at theGrand Exhibition Gallery. As you follow the main path leading to this area,you’ll eventually encounter a non-functional cable car, primarily for exhibition purposes.
Within this room,you’ll spot an entrance with a set of stairs on your right,so take that path and you’ll face a strong puppet in battle. Once you defeat it, you’ll finda chest in front of you containing another Legion Plug.

Legion Plug Location #4
The final Legion Plug is found toward the end of the gamewhen you revisit Krat Central Station. Once you’ve reached theKrat Central Station Lobby Stargazer, continue forward and thentake the stairs on your right.
Follow this pathuntil you encounter a large enemy attacking a door.However, this timeyou’ll need to defeat this enemy to obtain it, so if you have any fire-based weapons or items, be sure to use them to make this fight easier.
You can head to Hotel Krat where you’lllocate the Venigni Craft Machine, and interact with it to find the option’Craft Legion Arm.‘You can use one Legion Plug to craft any Legion Arm you desire, but keep in mind thatyou can only craft one Legion Arm with each Legion Plug.