Thank you very much for reviewing our little game!
Yes, we decided to keep things simple as this is our first time using Godot at all, as well as our first game jam!
I fully agree that the level design could definitely use some more work, haha. Right now, the obstacles are randomly generated in chunks of, I think, 1000 pixels of distance (except for the first 3 for the sake of tutorial), and we increase the number of generated pixels each chunk. So it certainly would not be difficult to tweak, but we ended up not having enough time to properly playtest in the end - at least not far enough into the game to test this progression.
We're both very glad you enjoyed our little game though! :D