Great game! I got all the achivements, and just basicaly loved it. There are sp minor problems, but all of them are fixable. My only sugestion would be to make point reseting free after defeting the main boss, just to jerk around for an extra 10 minutes.
The problems that were there, bytheway, caused me a lot of butt pain early on, so it would be wise to put a 4/5 score. But what the heck 5/5 I loved it! Now give me part 2!