I like the idea, it feels kind of like fighting the weather. The UI could be improved for example by showing a number of symbols instead of just printing the number, that way it would be more clear how many of what moves are remaining without reading the panel. Also, there could be a couple of tweaks like removing the "fight mode" (is there some reason not to be in fight mode?), adding diagonal shooting (unless it's intentionally not there for gameplay reasons), and adding automatic end turn when you spend all actions. Overall good job on creating an interesting game like this!