Use the arrow keys to move. Try to go to the portal, which is at the bottom right. At first it looks like you can't go anywhere, but if you press 1 or 2 to change the color of the path, then the path to the portal opens.
When I was bored and got on Scratch, I found this project that I made a while ago, and when I showed this to my friend he said that it's good so I shared it. I might add more levels if this project gets famous