Thank you very much for the feedback and suggestions.
The pathfinding is one of my main challenges and I definitely need to work on that, that's right. Same for the UI, still I appreciate that the tutorial system has helped you.
I have fixed the bug you encountered on the start of level 2, good catch! It seems to have been a specific WebGL issue but it made me rework a bit scene loading to make it cleaner.
I will definitely take a look at your game and try to help you back.