Thank you very much for the feedback. That jam was a surprise in a couple ways to me. I participated because it forced me to do something new. Up to this jam I always used VS-Tools as a layer on top of my C#-Code. I've expected that I won't like it (which was the case - for many things I just prefer writing code) - but I also thought I would suffer more. Well - in the end I still had a lot of fun with the jam and it was definitively a great experience!
The other (even bigger) surprise was that I found a game idea which is fun. In the beginning I wanted to do a top-down-shooter. Due to missing assets I'd to make changes to the game-idea. So I the overall game-play is there by accident :-).
Now I will collect all the feedback I get in a proper document because in future I want to recreate the game. By respecting all the feedback that game should become a good one (which is maybe worth it to also release on mobile).