Like acidic spiders, these spiders only spawn whenever the middle path is one of the paths available; if the middle path is closed, they do not appear during the third phase. Each highly acidic spider contains 25 units of acid on the pool, so four will spawn in a solo fight if the middle path was open but not taken. If the middle path was taken, any leftover acid from the pool that was not drained onto the barrier will be sent into the respective amount of spiders needed. A pool with 26 units of acid left will result in Araxxor spawning two spiders, one containing 25 units and the other containing 1 unit.