This was a cool entry I really enjoyed playing it even though I only got to level 12. I was not fully sure about the effects of the upgrade system especially the ones which effect enemies. Find below my review video:
2:01:30 PigubesViewing post in PIGUBES jam comments
Thank you for playing our game and for the video review! To clarify the shop mechanic. Green buffs are applied only when bought and red debuffs are applied when they are NOT bought. By buying red debuffs you are preventing them from being applied. We know it is our mistake to not clarify this clearly.
I hope you enjoyed our game despite this flaw!