Been playing Caverns 2. There is a lot of great potential in this. I like your puzzle with the big faces.
However, there is a lot of errors too, and areas that just seem unfinished. One problem is the boulder section. Without a black outline, or some other way to distinguish them from background objects, they don't play well. There also seems to be an unfinished area. I fell through the floor at x1014y1003. Was I even suppose to be able to get there? There is also a wall swim due to misalignment of the ground at... well, I can't find it.
My biggest problem is that there is not enough of a story to keep me interested in what is happening. I don't know why I'm there, who the people around me are, or why I should care.
But, it is still impressive you did as much as you did. This just needs polish.