Date- 13 April 2321
Time- 09:46
Location- Southern Region, Southern Capital, Central government hideout
The the reason why the detonation of Arnas's corpse doppelganger was able to destroy the array formation covering the vicinity of the dual gate dungeon was that the corpse explosion was a controlled explosion whose intent was not to cause maximum devastation but to produce a particular noise as a byproduct of explosion.
This noise produced by the explosion would alter the vibration of the soul pathways of nature such that it will be able to temporarily transfer energy from the explosion into the soul pathways of the array formation.
After the volatile soul energy from the explosion entered the soul pathways of the array formation in a large quantity the noise altering the vibration of nature's soul pathways stopped and the volatile soul energy was permanently trapped in the soul pathways of the array formation.