charming little game! I love the depth the upgrades hve and how they very much can ruin a run if you choose the wrong ones. the difference in enemies is a neat concept, and I loved the discovery of findign out the green ones where not infact a tankier blue one, lol.
overall, a fun game with a great central idea as it's concept, making for quite a frantic palythrough. can't wait to see future work from you!