Loved the game mechanic! The only trouble with it is that eventually, the enemy overpowers the player. One suggestion to combat this problem would be to spawn bigger garbages that would give the player more bullets. The player will also need to stay in that spot for a while to collect them, which I think is a fair trade-off. The art and music are good and suit well with the game. Other than what I mentioned, I think you guys have a pretty solid game! Well done.