RetroChallenge 2018/09: Saved just before the Bell by Solar Penguin!

A big thank you to the Solar Penguin for noticing a spelling mistake on the final screen when you win (take a look at the end of the video in my last post). I fixed it and found a few more speedups. Also tweaked the game levels and fixed the bat movement timer so it didn't reset every time you moved from screen to screen. Now the bat's activities should occur on a more regular basis. Here's a new playthrough, in which the chalice turned out to be fairly easy to secure. But I still manage to get killed a few times.

Hope this fix makes it into the RetroChallenge. I also added a REMark to the code with a shout-out in honour of the contest (you can see it at the beginning of the video). Thanks to all for sharing in the fun!