Thanks for the good comments, yeah I had to rush to finish my entry due to being away for a week. I totally agree about adding feedback for when your bullet hit. I had time to do it for the crab and squid but not so much for the pipes and turrets.
For the radioactive stuff I wanted to add a Geiger counter meter in the corner but again, not enough time.
The crab I had planned to add a dotted white square at his base like in Cobra Triangle for the NES to indicate where to bring the mines.
There wasn't much time to playtest or even test on my wife's computer.