Death's Door: How to Get the True Ending

gamerant.com:

Acid Punk's Death's Door is an expansive game, filled with secrets. Like its predecessor, Titan Souls, Death's Door also has a second true ending, hidden behind the standard ending. And just as Death's Door's scope is much larger than Titan Souls', the method to reach the true ending is much more complex.

Getting Titan Souls' true ending route was a relatively straightforward task. There was no secret puzzles or areas, the players just needed to kill every boss.

Death's Door Is Proof An Easier Dark Souls Would Still Be Great

It's not so simple with Death's Door's true ending route. Here, getting the true ending means traversing across an entirely new alternate version of the map, and completing brand-new objectives.

It's important to note that Death's Door's true ending is not an alternate ending, but essentially an epilogue. The player needs to get the standard ending first.

After beating the final boss and going through the credits, the player will be shown a bonus scene where the boss's corpse is dragged out of the Hall of Doors, leaving behind a rusty key. Once the player reloads their save, they can head there and pick it up.

While in the hall of doors, players may notice that some doors now have a red tint to them. This is a completion aid. A red door means there's something left to find in the area.

Death's Door doesn't require players to get every single upgrade to get the true ending. That being said, it will make some upcoming challenges easier.

The rusty key unlocks the bell tower at the northern end of the Lost Cemetery, near the entrance to the Urn Witch's estate. Climb the tower and strike the bell to ring it. This will turn day to night on every map.

While some areas are unchanged, the night versions of most maps