This is level 7 of the New Tunnel.
In this level, the platforms are relatively large in the New Tunnel. Therefore, using the Duplicator is great. You need to change gravity in this level, but since the location of the platforms of the wall may be quite far away, you may need to jump higher in order to touch the wall. You may also try to jump off a duplicate to jump even higher!
Keep jumping off platforms once you reach the edge and when you land, keep running again. Soon, you will be able to beat this level.