Good job!
Some random thoughts:
- You nailed the shooting and the zoom.
- The entry level, where you see the controls and can adjust them, is brilliant.
- Very small thing, I didn't realize the play area was isolated from the menu one, I thought it was connected and died once going backwards. Perhaps having them at the same level could make it more obvious?
One more thing about the assets, I saw that the source code is 7.5 GBs. I haven't looked at it yet, but I suspect you added the used assets directly to the project. For example, a Paragon character by itself is around 1.5 GBs. However, you are not using most of that content.
If I may, I would recommend you to have a separate project just to triage the assets, and build some blueprints and test maps with the things you need there. Then, you can migrate just that test map and/or blueprints, and Unreal will be smart enough to only copy the files that are actually in use. For example, I have two Paragon characters in my project, but combined they "only" take 700 MBs instead of 3GBs.
Anyway, the game itself was very nicely done, and lots of fun!