That was a fun an addicting game. I enjoyed the pace of upgrades, that allowed me to keep myself interested in the gameplay loop and I was curious to see how the cards would play out. The mystery of what they were made me afraid of certain cards, but I managed to get through all of the cards without dying. I liked the radar you added because otherwise I would not have been able to survive for long. I found a way to kite the enemies by consistently going around in a large circle, which allowed me to also pick up the balls in a delayed fashion.