Extremely well done, very nice! We used Construct 3 too, we're jealous of your skills with particles, animations (that title screen!!) and enemy sprites!
I greatly appreciate your feedback! A quick tip if you decide to continue using Construct 3: it is very beneficial to learn how to use the "Tween" and "Sine" behaviors for objects. It can greatly and easily improve animations and transitions. I use them abundantly.
Thank you for that tip! The snowballs were originally snowflakes but we couldn't figure out the right sin values to make look like a windy wave of snow, so snowballs it was! We haven't tried tween yet. It's an amazingly capable tool, and we've only spent a week with it.