How do I survive the second brigand screen?

Again, the death messages are very helpful here.  Those are the best hints
you can get.  Some spoilers may be needed to give answers.

You'll die if the front door is left open.

So close it.

Watch where the brigands now enter to kill you.

Try to prevent them from coming in by blocking the door.

Push the chair in front of the door.

As you may have noticed, the brigands can't be watching from the front door.
Wait until they turn to another entrance before you block this door.

There's no way to stop the brigands from coming through from the left.

You'll have to block their path once they're close to you.

Push the candelabra as they get close to you.  Timing is important.

All you need to do now is trap the brigands for good.

Notice that chandelier?

The brigands will stand underneath it for a while.

You could drop the chandelier on them if you could reach it.