Ugh.. I've been on it for 40 minutes on the new challenge road, and thank god I didn't have the acheivement yet because it didn't feel worth the effort at all.

Now, the positives of this levels are that it looks generally good and the use of the Metro music makes it better, but that is it.

The negatives ? Well...
-Trains desync constantly, meaning that you have to way for multiple cycles to pass to continue the level (the more trains between safe zones, the more you need to wait)
-unclear pathways, it's easy to know where to go, but not how to get there, gets even more of a problem when trains are desynced and prevents you to understand where to go even more
-NO ACTUAL WAY TO DIE. When you fall, ypu get back to the safe zone, BUT you don't get ANY damage, meaning that you'll never die, and just get frustated when you'll respawn over and over again.
-Platforming is way too tight, sometimes you need to to the perfect input in order to succed, sometimes just after multiple waits for cycles to pass, meaning that missing forces you to wait to try again.

BUT, I think that this level is fixable, it just needed more playtesting before going live.