Although twinblades have been a part of Elden Ring since the beginning, Shadow of the Erdtree added two more to find, one of which is called Euphoria. Given its physical and holy damage, as well as needing 24 faith to wield, it fits pretty well into a faith build. Its scaling is good, too, at least when it’s fully upgraded, starting from a D rating (on faith) and ending on B. More importantly, its unique ability, Euphoria Vortex, makes you feel like General Grievous, so that’s a win in my book.
There’s just one itty-bitty problem: if you really want Euphoria, you’ll have to wait until you reach the endgame area in Elden Ring: Shadow of the Erdtree. Once Romina, Saint of the Bud is dead, you’ll gain access to Enir-llim and, subsequently, to Euphoria. Go get that done, then come back!
Starting from the Spiral Rise site of grace, exit the temple and go down the first flight of steps to the first landing, where the priest is standing. If you hang left, you’ll find a flight of steps that takes you down and under the stairs above.
Run to the edge, look down, and drop to the stairs below. It doesn’t go anywhere but up, so enter the gazebo and walk to the edge where the railing is broken. Look down and make another jump down to the ledge below. Be very careful; it’s a long way down!
Walk along the architecture of the wall (carefully) until you come to a broken ledge. Drop down again to another ledge below, then continue following it around the corner. When you’re at the corner, stop and leap to the ledge below. Follow the ledge to the left and around, then make another drop to the stairs below.
Down the steps, you go to the landing, ignoring the undead shadow behind you. Now, you’re going to see a window over the ledge. Make a running jump to the window, and you’ll be in Belurat, specifically a section that’s only accessible from Enir-llim.
Word of warning: when you exit the building, a spider-scorpion will drop down. Easy kill for some runes, grab the Scadutree Fragment by the altar, then take the stairs further down, and you’ll be led to an elevator.
When you reach the bottom, cross the bridge, open the door, and you’ll find Euphoria on the corpse inside. You need 16 strength and dexterity and 24 faith to wield Euphoria in Elden Ring, so if you’re a faith user, you can start using it right away.