Thorn teleporting at 25% HP
Jumping and not dying.
It’s a mini jumping puzzle, there are ways down.
There is a chain back towards the start of that platform that leads to another platform with another chain that leads to another. From there you will jump down to the platform below, take about a 50% hit, then there’s one more you’ll jump down to before jumping down to the platform the King is on. Sadly, after my group jumped down he glitched back to the second area again…
Try to avoid jumping where you can, but just use walking off. Less damage. It’s all possible.