Incarnate a Briefcase Management Officer in its everyday job.
Handle all the resources inputed and outputed by the different elements in the briefcase. But your client is a bit special, he had the (not so) great idea to place all of his internal organs in the aforementionned receptacle, beware not to bring him to his ungodly end!
A deliberately obtuse game hiding several secret. Will you be able to uncover the terminal conundrum? No. Probably not.