As said in the First post Caverns 2 is not a finished product. It's a project that Bunnrey said would probably never be finished, but I asked them to release it with Caverns because I wanted to see it. The reason Caverns 2 seems unpolished is because it is.
I really just wanted to see the environments because Bunnrey comes up with really unique and pretty ones that are fun to explore. I'm not done with the level but so far my favorites are the crystal grotto, pink grotto and underwater areas. I think thats the best transition to underwater I've seen in a level, I was honestly very surprised and delighted!