Looks cool! Commander Keen 4 was so awesome back in the day. Did you ever play Hocus Pocus? Another old dos game with a great feel to it - you might find some inspiration in this one too because it's magic themed. What do you have planned for the cut scenes? It would be neat to have character art/portraits in the same style you've done the rest of the world. Eager to play the demo when it's out!
I *love* Hocus Pocus. It was my favorite game as a kid.
You can be sure that I draw a lot of inspiration from it. I even made a remake of my favorite Hocus Pocus track
a few years ago because the melody of it has haunted me for years.
Funny, I was thinking about mentioning Hocus Pocus as well. It would be nice to play another DOS inspired, hard, level based platformer again, so I'll be following this.
Looking at the screenshots it looks like the snow tiles and the dungeon tiles have a bit of a different style going on. The outside tiles look more modern while inside looks more retro. Because of this I don't really know what kind of feeling you're going for. I like both, but I'm not sure if I'm going to like them in the same game.