I would suggest putting some instructions on the game's page itself. I was also confused as to what the objectives of the game were, and what the bar at the top meant.
For example, while I correctly assumed the arrows would control the character, I did not know that "W" was a button I could press. It's also generally confusing when a game has you start by clicking "Start" with the mouse, but then the gameplay itself is played with the keyboard. Just something to keep in mind :)
That said, I think the theme is well incorporated into the story/gameplay. I also really liked some of the art (seeing a shed or a billboard floating in space).