Wanted to comment but a lot of people said everything. Just gona encourage you to spend a day or 2 after the jam to post a little more polished version, nice work for submitting.
Viewing post in card hell jam comments
plan is to update it at least a little bit.
Already have made it so batteries spawn every turn if there are less than 3, made it so it spawns more often AND made running out of time less punishing (now it adds a "death" card, rather than ending the game. Similarly to getting hit by a bullet)
Fun fact: In the currently uploaded build the turn of your enemies is bugged, causing it to spawn a bullet every frame if it casted the shoot card (oops:( )