I just remembered a different trick that has just become relevant again!
Unlike thrown bottles of sulfuric acid, a wand of acid rain doesn't assign blame to you, as long as you don't hit an NPC with it.
So you can sneak into the sumo arena, blast the walls with acid rain and not even have to worry about teleportation to get outside!
This also has the effect of leaving acid puddles everywhere for Huang or the audience to hurt themselves on, as well as making it easier to position the mustard gas on the southern wall.
It also allows you to exit the arena proper and start punching the audience, but that results in immediate disqualification.
As a side note, I REALLY like how the explosions set things on fire now.
Here's a gif showing that nobody cares about you killing people with mines in New Attnam: