This is level 3 of the U-Tunnel.
In this level, the color of the tiles are really dark, similar to the ones in the Low Power Tunnel, which can be quite challenging and make you fail this level easily, though if you adjust your screen brightness to higher levels, you can solve this problem easily.
Moreover, the gaps between platforms are pretty large, and sometimes you need to jump on walls, so you need characters that can jump high and far away. Normally, the Lizard would be a great choice, but in this level, you may need to do short hops as well. That's why you need those who can adjust their jump height, such as the Runner and the Student.
The Pastafarian is a great choice, since her light bridge can let you see the dimly-lit tiles more easily, thus reducing this level's difficulty considerably.