Climb up the big vertical pit to reach the dead Titan demon and the Crucible handle. Don't forget to pick up the two items in the corner on the other side of his legs, one of which is hidden behind a destructible wall.
There's also a Battery in one corner and a Codex Page in the other.
A series of jumps, horizontal bars and climbing walls await you. Use Fast Dasher (which speeds up the Dash recharge) to go through a wall and find items.
You'll need to go around the area as there's an Praetor Suit point, a Codex Page and a Sentinel Crystal, before jumping over the cliff and reaching the bridge.
Crossing the large dilapidated bridge that follows, you'll have to drop through a hole to reach an Extra Life on a platform.
In the next rooms, items are easy to find simply by searching the corners of the room. However, in the throne room, use the door on the side to take an aerial route and activate the blue trampolines with the button.
You can knock the giant chandelier down with a well-placed punch on the chain. There is a secret high up: you have to use the blue trampoline to reach it after a double aerial dash
Don't forget the buttons behind the throne.
