Glad you went through all the levels we made (we didn't implement the ending loop haha).
Level design was rushed on the last hours so all your points are valid and already taking in account for our next update.
About the enemies indications I suggest you look here https://twitter.com/dzamanikord/status/1160273294655987716?s=20 that's what you should see if there wasn't a bug with the WebGL build which isn't on standalone.
Anyway thanks for playing, I will check out your game in a few minutes!