Nice pig design, and great music. The overall aesthetic is very pleasant.
The start of the level is predetermined it seems, but I guess it makes it easier to get into the game that way.
The pig will stop whenever he hits a wall and can "climb" the wall if you press jump. I wouldn't say this is a problem because you need it at times to reach some of the platforms!
There is a green bar at the bottom of the screen that scrolls away and disappears, I don't know if it's always supposed to be there? The background also seems to disappear, but other than that it looks nice if you ask me!
I don't want to be too critical of this game because it's very nicely done and I enjoyed it!
Great work!