The Imperial Gardens
In this dungeon you will encounter a glowing lump in several places. These lumps are in the wall and when you shoot them you create a hole in the wall.
You will often find special loot and chests there. You will also find a stone with a symbol depicted on it. remember the four symbols you encounter, you can enter these symbols in a mechanism at the end of your run to open a hatch in the floor.
To make the symbols easier to remember, use the symbols page
If you pay attention in this area, you will find different symbols in four locations. If you haven't been paying attention, here are the four symbols that open the hatch.
At the beginning of this area you will find a hatch with a symbol on it on the left side. this hatch only opens when it is a blood moon.
Bell Tower puzzle - Blooming Heart Relic
When you pass a tall tower with a bell at the top, use the elevator in the tower to open a chest at the top. Once you're down the elevator, get out and activate the elevator again without going up yourself. it is immediately noticeable that symbols appear.
Stand back from the tower to see all the symbols at once. The order of the symbols is also important in this puzzle. Walk back to the tower and stay on the ground floor, walk between the stairs to the wall, the wall disappears when you get close to it and a new room becomes visible.
In the room there is a mechanism with disks that can spin. rotate the disks so that the symbols we saw earlier on the tower are now at the top of each disk in the same order.
A large stone door opens and you have access to Blooming Heart Relic