Thanks, Tom. Do you need to get each and every screw, or is it a certain amount? I noticed some of them are pretty hard to reach, and you'd even have to go all the way back if you can't get it anymore for being on the wrong platform.
Bingo. 
Far as I can tell, you need to get each and every screw, every time. So if you're new to a stage, you need to "learn" it so you know in advance which platforms to jump on and which ones to avoid.
The game is definitely pretty brutal! I've made it to stage 4 now, though -- but I beat stage 3 *purely* by luck. Although I translated the completion conditions for each stage earlier in this thread, I tried my best to forget what they were so I could use RPG mode to figure them out as I played... but in stage 3, no matter how many monsters I RPGed, I couldn't seem to get a straight answer, and had absolutely no idea what time of day I was supposed to get to the end of stage 3-2 at.
Fortunately, it seems I must've started the stage at just the right time, because I naturally got there just after noon, and that was apparently exactly the right time, because it took me right to the boss. So I totally got lucky on that one!
-Tom
