Hey, it fitted the theme and was an okay experience, but a few points as other have pointed out, the music wasn't that good but I understand if it's something new you had to do, been there :D also after 20 deers it lagged, but it seems you found the problem. Other than that, it was a pretty basic game which can be improved upon next time add some challenges, maybe some time limits, enemies, highscore.
well done, keep up the good work and you will get an even better game next time :D