I really loved the "red light / green light" sort of enemies in the 3rd wave, where they would pause and then suddenly go fast? That was an interesting new challenge to deal with. When you click left mouse it changes the bear's color, did this do anything else?
Viewing post in Night Light Down jam comments
On the color thing, no, it doesn't do anything else. Its just a little Easter egg. I found out how to generate completely random colors in Gamemaker a while ago and decided to have some fun with that ability. If you press the middle mouse button, it also randomly changes the bear's color whenever it blocks an enemy.