You need a ToS with self rez
Enter the crypt, go downstairs
On the left wall there is an invisible wall.
Spam jump on the left corner you will pass the invisible wall.
Move to any direction to fall down and die.
Self rez, and run noth east.
Pull the 2 spellguards and run north, they will bug
You can now start to dps Kyllikky with AoE or combo (activate while jumping)
Loot.
Edit : Screenshots added
Spam jump and forward to pass the invisible wall, then, move to fall down and die, you can use /stuck to stay alive but it sends a report, dunno how risky it is.
Run to the north, waypoint is 265.345