Thanks a lot for your comprehensive feedback. Appreciate it.
As of the devlog... afaik that was optional. But it wouldn't have been that long anyways since I joined the jam in the final two to three days. The game was made in the framework Raylib. Which isn't a typical engine, which means it doesnt have an editor. So the levels were drawn out in MSpaint and then the coords typed into the level files manually. Which isn't at all a good way to do things, but I guess in jams you never do things the way you should be doing them.
Devlogs should have some secret information about games: so something that I intentionally like to leave in my games are devmodes. You can toggle it by pressing Shift+Comma. It gives you some extra visual information like framerate or the pivot of the space ship. Gameplay vise you don't burn any fuel while in devmode. And you can cycle through the levels with F2 (previous level) and F3 (next level). The mode was just for me so I could test things easier during development, but I left it in just for fun. It isn't part of the actual game though.
That's my short improvised devlog, I guess. Thanks again for your feedback.