A guide to the "Company of Stone" Critical Encounter on the Occult Crescent: South Horn.
How to Spawn the Company of Stone Critical Encounter
Defeat Crescent Maroliths to spawn the Company of Stone Critical Encounter.
How to Defeat the Occult Knights in "Company of Stone"
At the start of the battle, use multi-target attacks on the Occult Knights.
After they are defeated, untargetable Occult Knights appear along one side of the area. They will do line attacks in a random order. Get far away from the knights, then stand next to the first line attack marker that appears. When that line attack goes off, move into the safe spot that it leaves behind. More line attacks will appear, so try to keep track of the order that they appeared so you can move toward the center of the area when it's safe.
This is followed by several very large circle attack markers, starting in the middle, then appearing around the edge, going clockwise or counterclockwise. Go to the edge and stand next to the second circle marker that appeared so that you're in the safe spot where the final circle attack marker has appeared. After the edge circle next to you has disappeared, move into the safe spot that it leaves behind.
Then there will be another wave of Occult Knights to defeat. Use multi-target attacks on them like before.
Next, four untargetable Occult Knights will appear, and each one will have line markers in front, behind, and to the sides of itself, with a rotating marker around it. There will be four safe spots. Stand in the safe spot where there is a counterclockwise rotation marker to your left, and a clockwise rotation marker to your right. This way, your safe spot will move across the area as the enemies rotate, and you won't get hit by any line attacks.
This is immediately followed by line attack markers with safe squares between them, and a knockback marker. Position yourself to be knocked back into the second set of line markers that appear, or stand in one of the initial safe spots and use a move that prevents knockback, such as Arm's Length, Surecast, etc. Then when the first line attacks go off, move into one of the safe spots that they leave behind.
Defeat the next wave of Occult Knights.
Several rows of untargetable Occult Knights will appear along one side of the area, as well as some untargetable Occult Knights along the left and right sides. The Occult Knights that stand in multiple rows will have circle attacks with arrows in front of them, with gaps in between. Each row will do moving circle attacks in different positions, so make sure to find a safe gap after you get past each row. At the same time, the Occult Knights along the sides will do circle attacks while slowly moving across the area, so make sure to dodge their attacks as well.
After you have dodged that, defeat the waves of Occult Knights. Eventually, some Occult Knights will tether to a Megaloknight. Focus on defeating one tethered Occult Knight at a time, while dodging the line attacks that these knights occasionally attack with. After you defeat all the tethered knights, target the Megaloknight and try to defeat it as quickly as possible so it can't finish casting Barefisted Death.
Rewards from the "Company of Stone" Critical Encounter
If you have started the Arcane Artistry quest in Phantom Village, this Critical Encounter has a chance of dropping a Caput Mortuum Demiatma.