This is great. Bit hard, but has a lot of potential. Flying about by "grabbing" the broom is enjoyable. Suspect the click to fire spell maybe done on checking for mouseclick state, where mouseclick is binary flags, so can't fire rifle while grabbing the broom. (eg left click = 1, right click =2, both = 1+2=3)
Gameplay reminds of the first Touhou, Highly Responsive to Prayers, but unlike most "[Game X] but with [Aspect Y]" it is very enjoyable on its own thanks to the character/enemy designs and audio combining for a pleasantly quirky experience.