Want to know how to find the Vault of the Formless key and open the locked door in Remnant 2? Despite the exciting storyline of Remnant 2, most players feel they must open every locked door and find every secret weapon. So when you find a locked door at the end of the Vault of the Formless dungeon, you will not be able to accept failure. Of course, you will think that you did not kill all the mobs, and this is partly possible, as some enemies can spawn a bit later or fly under the platform. But you will also need a secret key, and we will tell you how to find it.
To open the locked door in the Vault of the Formless in Remnant 2, you must find the secret House Lythla Glyph key. But even after searching all the rooms in the dungeon, you may miss this item. The fact is that you need to return to the penultimate location of the Vault of the Formless dungeon and pay attention to the rotating columns. You may notice that the columns stop in two positions: letting you through or blocking the passage.
Returning to this location, run through the first column as you did before. But when you enter the second column, stop and wait until it changes position. Suddenly, you will notice a secret passage where you will find House Lythla Glyph.
After receiving the item, return to the locked door and try to interact with it to use the House Lythla Glyph. It may take a few tries, but if you can’t use the item, inspect the room and area under the platform. Perhaps you missed one or more enemies and should kill them to open the passage. Opening the locked door, you will see an open coffin with unique Rupture Cannon inside.