So there we are, in order to spare myself endless last minute modifications I’ll be sending this last video:
and I also managed to clean everything in my project and build an executable version:
https://drive.google.com/file/d/0ByIona5bWjelV2xaQjhoTHlERFk/view?usp=sharing
Please try it!
The controls are stock first person blueprint so just move with wasd and shoot with the mouse.
There’s still a little timer bug from time to time but you can just let it pass and continue playing. This is also really not optimized at all and might or might not run smoothly 
I’m really happy I participated!