Fun Ride, if not bumpy at times...
The game tends to remind me, and at times slightly feel, like a megaman game. The difficulty comes with a few aspects; the controls, and the ease of death when looking at the fast paced nature.
I found I could play the game the best when I used the arrow keys, but the controls got out of hand with bad jumps and unplanned dashes, a problem that could be solved with a dedicated dash button. The other problem comes with the limited amount of lives and the ease with which you die in the game, although this problem might just be a result of the bad controls.
All in all, it is a very nice game, enjoyable especially when played at a fast pace, but the controls aren't conducive to playing the game at its fullest, hope you can improve in later games!