After opening the door, there is a save point ahead. Save your progress.
Keep moving forward, cross the bridge, and eliminate a wave of enemies. After defeating them, look to the left; there is dust on the ground. Collect the dust, then head downstairs.
Collect the chest under the stairs, then climb back up.
Keep going up, defeat the enemy near the bonfire, and climb up this wall. There's a save point above. Collect the materials to the left of the save point.
After saving, jump down and take the other path. There is dust to collect below.
After climbing up, you'll find another patch of dust ahead.
Continue forward to a seemingly eerie hotel. Enemies will emerge as you approach. Defeat them and collect the dust ahead.
There is a save point in the backyard behind the house.
Save your progress. There are stairs behind you leading to the second floor. Go up, defeat the enemy behind the box on the left, and collect the materials on the right.
Next, break the wooden planks here and go inside to pick up the item.
On this balcony, obtain the "Blood Forest Mountain Lodge Cellar Switch".

