@ParalysisTerror - actually, no. IT's because I actually have no life and take my time out to do it. It's possible.
If you go over 1000, it screws up. so potentially, since each square is 10 height, the real maximum score you could theoretically get is 1039, which I almost got. dang.
worked perfectly fine for me. I LOVE THE ENDING SONG. I just watched all the credits.
And by the way, (spoiler) use the contra code to view the credits =3
Got a bug. For some reason, it gave me a spot where there was a spear. i picked it up, and there was one underneath. And Again, and again. but the enemies stopped coming (survival mode)