If this game was too easy it would only hold its fun for about 30 seconds. I just scored 5845 meters on a run, so I don't see the difficulty as being a problem, its the one thing that inspires you to try again, and again. Its well done for 8 bit, the music was cool, and the glass breaking and birds were really nice touches AdamAtomic has done a fine job.
The game was very of fun for me. I think that if you can pursue this on a mainstream platform (Xbox live) you could have some money in your pocket. I look forward to seeing some more of your work.
Check updates, there is a way to restore