The final, two-phase battle.
Integrion Bossfight is summoned by placing the Integrion Core on the altar in the Dead Void. It has 1000 HP across two phases.
At the start of phase two, half health, it becomes invulnerable for 5 seconds, then begins covering a large area (25x5x25 blocks) in glitch blocks, striking lightning, throwing TNT and sending red horror messages through chat.
If the player dies mid-fight, the boss no longer despawns as it once did, it waits beside the fallen player until they return. Defeating it does not end things instantly: after a 5-second delay, World Corruption resets to 0 and the end-credits screen begins.