If your language has a way of urging or commanding people to begin work, like the English "Come on!" you might use it here.
bake them thoroughly
People make bricks out of clay and heat them in a very hot oven to make them hard and strong.
a thick, sticky, black liquid that comes up from the ground
This is a thick substance made of lime powder, clay, sand, and water used to make stones or bricks stick together.
let us make a name for ourselves
"let us make our reputation great"
we will be scattered
This can be stated in active form. AT: "we will separate from each other and live in different places" (See: rc://en/ta/man/translate/figs-activepassive)