Export to pdf for manual marking of assessment

I work for an organisation currently looking to move our online learning platform to Absorb, using Articulate as the authoring tool.

As all of our assessments use questions with multiple possible answers and wordings, we must mark all assessments manually. I am struggling to find a way to get student assessments to us for marking.

With our current LMS, student assessment transcripts are automatically emailed to us as pdfs when they submit their final assessments.

Does anyone know of a way to export an entire storyline lesson as a pdf, and if so, is there a way to have it emailed to me whenever a student submits? I essentially need a screenshot of each slide in the lesson, in one document, so we can annotate and mark this. 

Any help would be greatly appreciated.