Another progress report:
Sometimes I just can't throw "Dark Souls" out of my mind when doing my project. Still don't know, if it's good or not.
Anyways, two more levels are complete - Swamps and Bridge. Maybe, it's time to make an another demo, because the next opportunity to make it will be only when I finish one more "level set", it may take a few months.
I don't know, really, should I spoil a considerable part of my game for some testing, or keep everything as a secret..?