Just played a bit of this. Love the feeling of the platforming.
Few issues for me:
Keyboard controls - I know it said better with controller and I *did* adjust to the keyboard controls, but it would be great to do these more in line with other platformers.
Foreground distractions - It was really hard to differentiate between some platforms and there being a hole there. Caught me off a few times.
Blended obstacles - It's also hard sometimes to know if you can jump on something, whether there is a door in the way (without walking into it and seeing it's a door).
All in all I can see this going well. Love the art style, the music is great and the sound effects (especially the spikey bomb weapon... I could listen to that sound for hours).