Thanks for trying out my custom scenario!
If you've never installed a custom set in OCTGN, it's not too difficult. Follow these steps. 
1) Find the folder with the strange string of letters and characters in this zip.
2) Copy that folder into the following folder on your computer: \OCTGN\GameDatabase\a6d114c7-2e2a-4896-ad8c-0330605c90bf\Sets
3) Inside OCTGN, go to the Games Manager tab and click the "Add Image Packs" button. Select the Stranger Things.o8c file.
4) Once you've started up a game, load up the Stranger Things.08d file, which will load up the cards. Also, load up the chaos bag depending on whether you want standard or hard difficulty.
5) Feel free to use the new Stranger Things investigators to build a deck in the OCTGN deck editor!

If you are interested in printing out the scenario to play on your table instead, you have two options:
Option #1: Open the Stranger Things Cards Printout PDF and print it out. The PDF is designed to be printed double sided.
Option #2: Go to a site that lets you print out cards (for a price). Email me and I can give you access to the high quality files you need. They look funky but the bleed margins are required by most print services.

Hope you enjoy! And I always appreciate any feedback!
        -Ian Martin- (tenderfury408@gmail.com)