Thanks for the cool review.
Yeah the movement is my biggest regret. :D Already fixed it and it plays WAAAAAY smoother now.
Yes the upgrades are a little flat. But I did not want to introduce to much extra Stuff in the end thats not polished and potential buggy. They worked and I could polish the game out for the jam. :D
But as I like the game and obviously the core seems to work quite well, based on the reviews I plan to update it. Including better and meaningful upgrades.
Thanks again. :-)