I liked the environment a lot and the use of the theme and special feature. The main menu usually gets overlooked in game jams but your look really cool even though its simple.  Moving the mouse to get water was also a unique method of recharging and the effects of the shooting was very cool like the shockwave and puddles on the floor but I had a lot of trouble with the navigation of the enemies, Many enemies were wandering into walls and sometimes away from me even when I'm next to them.  I spent a long time trying to find some of them only for them to pop out of a building and damage me which was frustrating. Its a shame there is no score counter shown when you die and I don't think the enemies need health bars when one hit from your weapon kills them. 

Overall not bad, Good job.