This is level 9 of the U-Tunnel.
You passed Level U-8! This level is easy compared to the previous one. But don't get too relaxed. It is still somewhat hard. Sometimes, the jumps are a certain distance, sometimes easiest as the Lizard, or the Runner.
You will need to change walls constantly. If you have the Pastafarian, you will barely need to jump, since the light bridge can cover up the gaps in the paths, so just look out for the need to change gravity.
Alternate Path Edit
Congratulations! After this level, you will get The Crystal Gallery! It is called the D-Tunnel at first, but finishing the tunnel will reveal the cause of the name change.