Got it. *SIVELOS uses TECH: WINDS OF AEOLUS, level 9999!!! A massive gust of wind blasts out of SIVELOS's hand, literally blasting the door off its hinges and crushing anything that happened to be behind it. After that, SIVELOS uses TECH: SEVEN RINGS OF BULLET HELL, level 9643!!!, which basically sweeps out everything else in the room.* I did it.