This is level 6 of the B-Tunnel.
The tile size in this level is quite large, and this makes the gaps large too. Use high jumps to jump over the gaps, and change gravity when necessary.
If you are using the Lizard, remember not to jump too far and ending up overshooting the platforms. This can be fatal.
Feel free to land on the crumbling tiles. The gaps are large, so you may need to run onto the edge of the crumbling tiles or normal tiles in the platforms before you do the big jump. This helps.
Overall, this level can be challenging if you cannot change gravity in midair or make long jumps properly. If you can do both of these, you can pass this level easily.