Looks like a really nice homage to JSW.
But it's *really* tough from the get-go.
I seem to mess up the jump over the VERY FIRST ENEMY 50% of the time!
JSW, although being AMAZING DIFFICULT, at least gave you more vertical space when jumping over individual enemies.
I'm not sure if the jump in this game isn't quite high enough, or that the height of the enemies is a few pixels too much... or maybe the collision detection is a bit unforgiving.
Nonetheless, I'll be giving this game some more time, as it actually appears to be really well designed.
Some great enemy sprites too.