Trials of the Hell Tower:
First Trial - The Watchdog of Hell. Hiruma lets his dog, Cerberos, loose.
Second Trial - Hell's Boiling Pot of Oil. The tower's Grand Observatory has several air conditioners set on hot, practically turning the room into a stove.
Third Trial - The Guard of Hell. Hiruma shoots bullets filled with dehydrants at people's ice bags, melting all the ice and making the bag explode.