Advancements

Siegeworks has its own advancement tab, unlocked by finishing a blueprint at the drawing table.

Advancement	Requirement
Siege Plans	Finish drawing a Siegeworks blueprint.
Full Scale	Finish building a siege engine from a blueprint.
Cast to Size	Cast a batch of ammunition at a casting table.
A Gift for a King	Fire a giant stone cannonball from Mons Meg.
Munjong’s Volley	Defeat three opponents with one hwacha volley.
Clean Through	Shoot a siege bolt through one living target and into another.
Repel the Assault	Use a forked pole to push a siege ladder off a wall.
Pavia, 1525	Hit an armoured opponent with an arquebus.
Fly Your Colours	Fill every banner slot on a siege tower or trebuchet.
The War Wolf	Break a masonry block with a direct trebuchet hit.

These are awarded for the action itself. Obtaining the corresponding item in your inventory does not complete the advancement.