You combine your Clockwork Sprite Helper with the Armling Alloy and create:

Alloyed Clockwork Sprite Helper
A reinforced Clockwork Sprite. It has more health, but is a little slower than before.
Hard, Piercing, Ticking

An armor clad Clockwork Sprite. Can now act as a shield to Marshall, along with the two previous abilities.

You then go to Stop n’ Shop.