Hello, I appreciate your input. The unresponsive jumping is a known bug that is currently being hammered out and should be fixed come next build. It seems that the player sometimes doesn't register it has made contact with the platforms after it has climbed its ledge for whatever reason.
Something similar can also be said about the level design. The current level design was more meant to give room for the player to be encouraged to use all of the current features relatively early on. The level design will be improved once I've gained access to the more detailed story focused backgrounds this game is meant to center around.
I'm glad you saw potential in it and I hope you give it another chance down the line once it's past its early development phase.