Ok, here is my feedback:
First off all i have mistaken the word "naughty". I thought it means nude, sry my english isnt perfect.
The second point is the remaining time. It starts with 2 minutes and i thought its the time you have to save Santa. It actually accours becouse the player hasnt a townhall ect. This map is build on an funny idea but it lacks in trigger.
I recommand you to go through a simple Tower-Defense Tutorial. A TD uses very much triggers, funtions and variables you use to make other games. Its in my opinion a good Tutorial for those who want to learn how to trigger in Gui. With that knowledge you can bring out this map very much fancier!
I hope you do so, the idea for itself would be a waste if it stays like this.