Thanks for the feedback!
The emitters beeing somewhat huge compared to the camera area was a design choice, but I can see how that can be frustrating. I could have thought of a better way of limitting the player or where to place the emitters to make it less frustrating while also keeping the challange I originally wanted - I'll keep that in mind for the future.
For the flag, not knowing exactly where the flag is was also by design. There is an arrow pointing to it (and I just now realised I didn't mention this arrow on the tutorial) - but the way to the flag is not always a straight line, so the idea behind some levels was actually to take the player first straight forward to the flag, and only then they realised they should have gone up or some other way around it. While I still like this design, for a game jam it might not be the best, since we only play each game for a small amount of time and don't really want to keep reseting levels because there was no way of knowing what was the intent of that level beforehand.
Thank you for playing! I'll keep your feedback in mind for the future :)