The player controller felt nice, just the right amount of floatiness.
The level design left me frustrated. Instead of challenging, the platforms tightly stacked on top of each other just felt frustrating.
I think without the lava it would have been fine, but with the lava it just felt unnecessarily punishing.
That being said, the lava was neat! I had my druthers I'd rather see some of the platform placement re-evaluated.