The turrets shooting was one of the bugs I just could not figure out before submitting the game. I was very disappointed with not being able to get that working properly. I do apologize. I hope that you still at least enjoyed the game in its current state. However, I am working to fix these issues and will upload a new version of the game as soon as I have the time to fix all of that as well as the getting stuck bug. I know that what triggers that is when you build a node or a turret and the sever enemy which is the orange one comes and destroys the line. For some reason the game goes into wire building mode but doesn't bring up the UI and it just gets stuck there. I have been able to playtest the game and get through all 10 waves by not building anything so I tested everything in terms of each wave to make sure that it all worked, but I could not figure out what was causing that bug before submission time in terms of freezing after Wave 3 or 4 once a power connection has been severed. I'm looking into it now and we'll hopefully have something and a solution in place very soon.