Here are some screenshots from stage 4, called Imperishable.
The beginning. The first half is inspired by Keyjump Cavern and that one cave level from MMD2.
Shell juggling while riding a skull raft. Don't know yet if I will put that section in the level.
Both ? blocks contain Yoshis. So you need to hit the second block, and then spinjump on the Ball'n'Chain pendulum to hit the first block...
...and with invisible Yoshi on, you'll have to deal with some nasty Ball'n'Chain Pendulums.
Pretty obvious what you should do here.
Hmm...
Layer 2 room. I got that berry glitch idea from one of the levels of "SMW hack abuse and die".
And now, a preview-ish from the fifth level...
This looks familiar... yet, things are subject to change in these screenshots.
Windowless ride, feeling alive
Are you alive or just breathing?