I couldn't figure out what to do in the second level sadly. Seemed like a neat game though and the screenshots look interesting to play.
Viewing post in Loop Shadows jam comments
I'm sorry it's not very clear!
You can go in the left wall.
You have to stack your loops to build a ladder, climb up, and then jump to the right to reach the portal.
It should be a secret way but in the next update i will make it more clear
In the description theres also a Tip for this Level.
Or you can also look in the Video for a solution.