Lapistia

Does firearms pierce armor?

Yes, but not all and not all types.

What is Asvaldr's arsenal? How does it differ from other weapons?

It is a variety of unique weapons created by dwarves. It may resemble both ordinary firearms and heavy weapons, but the latter also differs in that the weapons of Asvaldr's arsenal are always carried in the hands, while heavy weapons take up a separate slot and slow down movement speed much more.

Does it cost Influence Points to use a national ability?

Yes.

Is the Golem used only in battle or for anything else?

Mainly in battle and other situations where it might be useful. But your characters are unlikely to work in the mines.

How do you get a Golem? I understand that if it was in the lottery, you can't get it at the start?

Since transportation is quite inconvenient and maintenance requires special knowledge and skills, they are used in 95% of cases in the homeland of the dwarves, and since they do not appear on the maps, you will have to buy the necessary parts in the game and then transport them with the help of your companions.

Added after 47 minutes

Heroist, you don't take Creation, right?

That's right, why create when you can destroy?