Quizmaker options

Good morning,
I'm working on a course that the SME originally wanted to have broken into sections with mini scenario assessments after each, followed by a quiz at the end that would be scored.  Users would need to pass in order to receive credit for the course.  He is now inquiring about eliminating the final quiz and having the mini-assessments scored and totaled up to equal a final "grade."  I have a feeling this isn't possible, but I figured I would check here to make sure and see if anyone had suggestions for an alternative.  

I'm new to all of this, but I'm leaning toward suggesting we have a scenario before the section to test learner knowledge ahead and then one after that they would have to receive a certain minimum on in order to continue - they would have as many opportunities as they needed, as long as they eventually came to the right path of decisions. The final quiz would be a standard 10-question multiple choice set-up with simple scenario questions to summarize the concepts explained in the preceding content.  Does this make sense?

The kicker is I'm being given an extremely tight deadline - I'm meeting with him this afternoon to go over the reality of what we can get done and whether or not we really have more time than originally expected.  With that being said, I'm concerned that I'm trying to make the whole scenario/branching thing too complicated, since again, I'm new to this.  

Thank you!