It took me a long time to revamp each scene in my game but this is what I've been doing for the last month. In the first half part of this video you can see the way the walls fade in and out. I personally disliked the way it looked and came up with a better alternative by keeping a secondary cutout wall hidden then revealing it while the main wall went into transparency . See the later part of the video for what I mean.
Leave a comment on my facebook or youtube pages and let me know what you think!