Really glad to see another Unreal Engine game. That was a really fun and kinda challenging experience. Don't tell anyone that I looked at the cheat sheet😁. The level design was super cool and creative too.
Also if you want to reduce the file size, you can delete unused assets before packaging. Or if you think you still need those assets for maybe later use, you can move them all to a folder and exclude that folder from getting packaged. It can be done in Project Settings under the packaging section.
Overall it was a really cool game, great job 😄