Welcome, and thanks for an interesting first level. I got the checkmark, but I'm not exactly sure how or if it happened the way you intended. That can be a problem with "hidden" levels. From a player's viewpoint, they suddenly just end and leave you asking, " Okay, so what did I do right?" But the level has a very balanced look and stable mechanics, which takes some skill to achieve. So well done. Look forward to others as you learn and build more.
@Don G Rowe Thank you for your review! Your information is very important to me. Coming soon new level, The cube!