Overall, a great idea. But there are a few problems:
1. The intro to the game is quite long and could do with a "SKIP" button.
2. The intro screen with the conversation doesn't scale properly for resolutions that arent 16:9.
3. Theres a spot on the map where you straight up fall through the floor, its the corner on the road just before the first giant enemy.
The shooting could do with some work, maybe try adding reloading for realism.
I really like the idea, I'm sure that it could turn out fantastic if you had more time to put in it.
Good luck with future JAM's! :)
- The "E. server" development team.