They attacked you because you wrecked the wall.
Throne room = valuable Across property.
Wall= Across property
You + wall = wreck
Wreck + property= vandalism of highly valuable property.
Ilpalazzo's throne room equivalent to the oval office in the white house.
Damage of such property= punishment.
The trap door is the usual punishment in the throne room, so when I pull the cord. You're suppose to fall, so when you didn't fall I had Sunako pushed you in.
When you did fall. You tried to blow up the trapdoor. Meaning damage to Across property.
So I increased the punishment by reminding you there were alligators, but you killed them. Animal cruelty of Across owned animals
You then broke another wall.
I tried to let it all go if you simply fixed them yourself, but you continued your vandalism by sealing the door, a new offense.
The punishment was beating your head against it until it broke and the repair of the wall.
But once again you refused.
Val tried to warn you using very threatening gif images.
Above_Average_Asian

Oh that does it. First of all Jin, this is the throne room of lord Ilpalazzo. The room where everything is decided, where we have meetings, where we can pay our respect to Lord Ilpalazzo and where people can be punished. When the real lord Ilpalazzo come back he is not going to like that you're damaging Across property. The fact that you're tearing it up is an insult to lord Ilpalazzo and the guild. Either you fix that wall now or I'm going to execute you where you stand.

However you chose to ignore her warnings and as a result she beat you to a pulp.
She even fixed the wall to end this whole mess.
How did you react?
You tried to fight the person giving you a warning and enforcing your punishment.
But no you chose to destroy all the walls with a bomb.
The destruction of all the walls which was Across Property, compromising integrity of the throne room, and endangering Lord Ilpalazzo.

Perhaps it was my fault for overestimating you, thinking that you would understand the hints. I wasn't around for Val's very clear warning, but apparently it was still not obvious enough. I only left for a little bit and I come back to find the throne room in rubbles. I took action immediately and broke character to tell you to stop. These are very serious offenses and are grounds for high treason.