Ok, it sorta bothers me that you have to use 1600 energy to see the swarm. I decided to suggest a mission that let's you battle the swarm. This would be a ranked mission if you looked at the title.

Before I tell the mission details I think Kora should contact you and say "Hello (Your IGN), we have a mission that requires your assistance. Recently, a mass of shadows has covered a few depths above the core. Unfortunately we had lost contact with the outpost that was stationed there when the mass of shadows arrived. We need you to find out what happened to the knights that was in that outpost. Good luck, Kora out."

Now.... Since it's a bit late I only have time to describe the first depth. After going down from the lobby. You would be in a huge pitch black area. The only thing you can see are the paths and rooms. You see a module and read it. "I have been sent here by Spiral HQ to find out what happened to the outpost. But, the shadows had blinded us and some of us had been consumed or taken by the shadows. I cannot describe this horrible shadow as it is too hard for me to handle. I am the last of this squad..... So tired...... Must resist "them"....... " -Left by Blake (One of the recon knights). On your way, you will encounter a bunch of swarm infested monsters. The only profit you get from this mission are from boxes, which would be common to make up for the non dropping monsters. You reach this small room and see a black knight. He looks like he was knocked out. A few seconds later, he quickly comes back to life. You see him consumed by the shadows and have red eyes. He seems to have a black acended calibur. This is sorta the mini boss but he's easier than arkus. His AI is the AI of the mecha knights except more stronger and more defense. He also does does shadow damage. Well.... I will add more details next time.