Lost Souls: 3
Doors: Argent x1
Keys: Copper x1
After the scene, take the first wave of enemies out until a new enemy, a Ravager appears. After defeating the enemy, you can look around. There's a lost soul and a blue angelic web high above ground, as well as another door but you don't have the necessary skills to reach them at this point.
For now, before leaving, you can find a small vitality star at The End of the archway to the right, and a divinity statue and a breakable door to the left. Destroy the objects too to gain red orbs. Destroy the door and go upstairs to find a Copper Key.
Try to head to the portal laid for you only to discover that your path is broken. You have to find another way so turn around and free the lost soul overhead.
Return back to the previous area and more enemies will appear. Take them all out then pull yourself to the upper ledge where you're told to come closer.
Follow the path and destroy the Ravager along the way. Make your way across the broken ledges then reach the blue rose on top of the statue in the plaza.
After reaching the Blue Rose, you'll be transported to the similar dimension where you acquired the Ophion pull / lift skills. Now, you'll have the Angel Boost skill. This is great for reaching high, hard to reach areas and for crossing wide gaps. Make your way to The End of the path and destroy the statue holding the chain.
Once you returned to Limbo, you'll have to fight a new flying enemy called the pathos. Destroy them and take out the enemies in the area. You can reach the argent door by using angel boost from the middle statue but you won't be able to open it for now. You can however, reach the lost soul you saw earlier.
From there, you can double-jump then angel boost to reach the angelic web on the upper wall. Destroy it to find another lost soul inside. That's the last collectible/ unlockable item in the area for now so just regroup with Kat to complete the mission.