Due to other real life events I'm out for today, so here's a hurried journal entry.
I added one more stage and made a preview. Having a preview possible was a good exercise as I discovered two first-time startup bugs.
I added a preliminary ending for the preview but I still need to figure out a good one for tomorrow. I have an idea, let's hope I can make it in.
Tomorrow I need to also add some more stages with hopefully differing gameplay. The gameplay options are currently not too diverse, so I'll try to get creative with the given options. Fortunately I have a few faint ideas that could be used...
Here's a link to the preview: http://www.georg-rottensteiner.de/webmisc/WoA4_Endurion_ForbiddenCity.zip
It works on my Vista laptop. Got killed a couple times on the spikes and gave up only really because I need to get a lot of work done. Thanks for the nod for where to find background music. I think your selection fits your game rather nicely. Best of luck.