This guide shows how to open all the locked doors in the Stormveil Castle in Elden Ring. Click here to see how to reach all Stormveil Castle Site of Grace.
Rusty Key Locked Door
I will show the path to the Rusty Key from the Stormveil Cliffside Site of Grace. From the Stormveil Cliffside Site of Grace, Climb up the stairs ahead and enter the building as shown in the pictures below.
Inside the building, keep climbing up the stairs till you reach the top level. On the top level, you will find a door as shown below. Inside this door, you will find a Rusty key on a corpse. Beware of a knight inside this room.
Take the Rusty Key. Come out of the room, then turn right and jump down. Use the rusty key to open a door on the north side as shown in the second picture below. The door is one level below the top level, where you found the key.
Rampart Tower Locked Door
There is a locked door near the Rampart Tower Site of Grace at the location shown in the pictures below. On interacting with the door, the game will tell you that the door does not open from this side.
From the door, turn around and enter the room on the west side as shown below. Go out through the door on the north side of this room.
After coming out, turn left and jump over the parapet wall as shown below. Then go left.
Climb up the wooden stairs ahead then go left till the end of the wooden platform.
At the end of the wooden platform, you will find a ladder as shown below. Climb up this ladder.
After climbing up the ladder, go straight ahead. Then jump down and turn around to open the door as shown in the picture below. This is the door that was locked from the other side.
Liftside Chamber Locked Door
You will find a locked door near the Liftside Chamber Site of Grace in the Stormveil Castle as shown in the pictures below. On interacting with the door, the game will tell you that the door does not open from this side.
Take the elevator in the Liftside Chamber to reach the upper level. Then climb down the stairs and go left to reach an open area. Go to the wall on the north side here and jump on the ledge as shown below. Walk towards right on this ledge. Then jump south to another ledge as shown in the pictures below.
Now walk through the arch to reach the terrace. Then turn right and enter the door as shown in the picture below.
Inside the building, climb up the stairs straight ahead and then turn right and climb another flight of stairs to reach an open area right above the open area where you were before. Go through the door on the western wall in this area as shown below.
Go through the corridor and you will reach a room with a few enemies. Kill the enemies and then go out through the door to reach the balcony. Jump on the ledge on the left side of the balcony. From there, jump down to enter another balcony as shown below.
Enter the door on this balcony and go out from the other side. Here, you will see a door straight ahead as shown in the picture below. This is the door, which you want to open. Open the door and you will reach back to the Liftside Chamber.