I am surprised that your game has no ratings at this moment. I actually quite enjoyed it. To be fairly honest I think this is probably the most unique concept I have seen during this jam? So really good job.
Few ideas:
1. The game would definitely benefit from sound & music.
2, The 'broken wall' is covering the view for quite a long time. The effect is nice visually but makes the game much harder.
3. I am not sure if this would not make the game 'too easy' but I think 'arrow path tracing' (like a prediction where it will land) would help a lot and allow to play a single round for a longer time :).