So, i really enjoyed the concept. As i was playing it i was realizing how a wave defense game to defend the line has not really been done before. so 5 stars on innovation. My one issue is that the bullets fire as entities , which mean that most of the bullets were not hitting the robot and as soon as the robot touched the package, it was GONE lol Great job though! If you continue to work on it I will for sure be back to check it out!