Thank you!
Yes I see that was not very intuitive. I added the circular attack animation when I added a range limit to the click attack, just to indicate how close to the player the enemy had to be, but I should have made a linear one which went in the direction of the mouse.
The strategy is to use as few torches as you can until you have over 100, then you can keep one enemy trailing behind you and light up the map before starting the next wave, this way there won't be any spawnable places and you will win
Thanks again for your feedback!