Lovely pixels and sound effects! The mechanics were challenging, but once I got the hang of the controls, I had fun making it to the end. The level design was well thought out too! Definitely not for the casual gamer since falling can be quite punishing.
The only issue I had with the controls was that when I try to jump forward, half of the time I would jump straight up instead, even with the forward arrow pressed, but not sure if I was doing something wrong.
Great job!