Accept the deal without knowing the terms

From Create Your Own Story

You think about his proposition for a second. "Oui. We have a deal."

The red spy snickers to himself.

"Bon...tres bon....If you desire to kill our sniper...then we can only repay you in kind."

You know exactly what he wants. If you are to murder the RED Sniper then he wants a chance at killing the BLU sniper.

Since you agree to the terms he tells you his plan. You are to keep your engineer disguise and go to the barracks. There you will use a security code to the sniper's room and make his death appear to be an accident.