Scrolling down to the bottom of the update screen, you will find an option to let you add extra components for your armour.
Before attempting the Ballista section make sure you have plenty of potions or you will die a lot.
Trying your luck at ballista section!? Better make sure you've got plenty of potions or you're going to die a lot.
Scrolling to the last section of the update screen lets you add extra components to your armour.
The dodge timing is slightly off so more often than not Lancelot will just roll forwards.