Looking to pick up a fancy weapon before you spend the crafting parts to improve upon one of your already existing weapons? There are a few unique weapons out there that you can get to really spruce up your gun play.
Otar's Revolver.
After returning from the GARM facility to Prague, you are tasked with having to investigate Dvali territory. Head into the Dvali theater and find Otar and Radich in his office, provided they are both still alive at this point depending on your choices up until now. If they are, take them out and you'll be able to loot this revolver off of Otar.
Lancer Rifle.
This rifle can be found in ARC territory in Golem City. When you first enter the throat area, drop down the trench and hang a left to find the container house. Get inside and use the ladder to get up and hop on the lift across the way. Once the lift stops, you'll see another ladder, drop down and follow the yellow beam to find this Weapon Briefcase which contains the Lancer Rifle.
Cote d'Azur Combat Rifle.
Your first stop in finding this is to visit Sobchack security. Give the guy behind the counter a dose of neropyzne to gain access to the basement, and then head down. Turn off the trip wires using the keypad hidden behind the painting and inside of the office they were guarding is a level 3 security safe. Hack into this or use a multi tool, and there with be a Tarvos security keycard inside. This will get you access to the Tarvos vault in the palisade property bank, you'll just have to break in and get to the vault to get this.
Devastator Shotgun.
During the side mission K is for Kazdy, you'll be tasked with breaking a few people out of jail. While you are in the police station, check out all of their lockers to find one of these drum loaded shotguns stashed inside.
There you have it, these are all of the unique weapons found in the game. Unfortunately nothing to help with a non lethal play through, but if you're the kill first and ask questions latter, any one of these should work wonders for you.
Otar's Revolver.
After returning from the GARM facility to Prague, you are tasked with having to investigate Dvali territory. Head into the Dvali theater and find Otar and Radich in his office, provided they are both still alive at this point depending on your choices up until now. If they are, take them out and you'll be able to loot this revolver off of Otar.
Lancer Rifle.
This rifle can be found in ARC territory in Golem City. When you first enter the throat area, drop down the trench and hang a left to find the container house. Get inside and use the ladder to get up and hop on the lift across the way. Once the lift stops, you'll see another ladder, drop down and follow the yellow beam to find this Weapon Briefcase which contains the Lancer Rifle.
Cote d'Azur Combat Rifle.
Your first stop in finding this is to visit Sobchack security. Give the guy behind the counter a dose of neropyzne to gain access to the basement, and then head down. Turn off the trip wires using the keypad hidden behind the painting and inside of the office they were guarding is a level 3 security safe. Hack into this or use a multi tool, and there with be a Tarvos security keycard inside. This will get you access to the Tarvos vault in the palisade property bank, you'll just have to break in and get to the vault to get this.
Devastator Shotgun.
During the side mission K is for Kazdy, you'll be tasked with breaking a few people out of jail. While you are in the police station, check out all of their lockers to find one of these drum loaded shotguns stashed inside.
There you have it, these are all of the unique weapons found in the game. Unfortunately nothing to help with a non lethal play through, but if you're the kill first and ask questions latter, any one of these should work wonders for you.