In Dark Souls 3, Irithyll Straight Sword is a Weapon which was gifted upon the Outrider Knights of the Boreal Valley. The sword is cloaked in frost and so it deals with the frost damage causing Frostbites to the enemies. So let’s quickly find out how to find the Irithyll Straight Sword location in the Dark Souls 3.
Dark Souls 3 Guide: Irithyll Straight Sword Location
Travel to the Undead Settlement area, then move towards the tower from where you will find someone is shooting Arrows at you from the start. When you reach the entrance of the Tower, you will see someone coming up from the elevator who is Siegward of Catarina. You have to use this elevator to head down to the basement. In the basement you have to move towards the room where you will the Frost Knight.
Now you have to fight to get the Irithyll Straight Sword. So for that, it is better to attack him with fire. Then you can take him down quickly and once he drops Irithyll Straight Sword, grab it and you can start using it.