Alright, could be better.
It was ok, theres a few things you need to improve on:
1. You fired far too slow, loads of Santa/elves would come and you'd fire really slow, it got me frustrated.
2. The music got repetitive, maybye you should vary it?
3. Also, the graphics were extremely pixalated, and at a glance made me eyes bleed (Sarcasm =) Try to improve them too.
It was ok, IMO 6/10.
<3