Thank you very much!
It's always good to get good feedback when you spend so much time on it. I took advantage of the fact that this game jam fell during my week of vacation to give it my all!
Unreal Engine is a great tool but I've been spending all my free time on it for 3 years now. At the beginning, it's very easy to use, but there are a lot of subtleties to understand when you want to do something advanced. The experience allowed me to go quite fast in the development of this game but when I see what I have already added, modified and improved it is quite frustrating that you can only test this first version!
Blender, Audacity, Gimp and UE5 have become my best friends :D
Hope to see you again :)