I'm going to have to come back to this topic. I know it's in Early Access, so it's good to catch all the bugs before release.
I'm dealing with a progress blocking bug. In level 21, there's 3 mushroom springs next to a series of TNT crates. On first visit, the 2 large ones stay put and a small one drops down onto the platform above. This will allow you to progress into the rest of the level. If you die, however, the small drops between the 2 large ones, making progress impossible.