I remember playtesting this a while back, I'm glad to see it progressed a little bit. Here are my thoughts:
-Level 10:
https://i.imgur.com/w4M9RCU.jpg I still think this telesync setup is wonky, since you keep your momentum while walking through the door. I think a teleporter you touch by jumping would be a lot easier to use. Also maybe have a faster way back up, like you have on the other sync level. The height feels good though.
-Level 12:
https://i.imgur.com/bXXuuwH.jpg Are the blue lines supposed to indicate where to go? If so I think a wider shape would make more sense and would catch the eye better.
-Level 13:
https://i.imgur.com/zUiuIDw.png I still hate how you cant see that the top part of this glass wall is actually pretty wide, it's super misleading, which sucks considering its the last jump of a longer sequence.
-Level 14:
https://i.imgur.com/n3ExA9P.jpg The layout of that whole room just feels weird. I'm sure there's a better way to structure the whole thing while keeping the same jump idea.
-Level 15:
https://i.imgur.com/CRTaAue.jpg Your flare should be able to go through the glass wall, the arc of the flare can be a bit dumb to work with.
Overall, the map is ugly and has terrible lighting, but I'm guessing this is gonna be addressed once the levels are done. Nice jumps though.