I really like this game! The art style reminds me of crayon drawings, I can see you put a lot of effort into it. I like the variation of the cultists' different abilities, though I must admit that the normal green one is easiest to control. Also it seems a little unnecessary to use the mouse for just one element in gameplay, it could be a button and then the controls would be easier for those who default to playing with arrow keys.
Very nice, my favourite part is the art style. Good luck!