Playing online, it seems to crash right after the barrels in the tutorial?
Thanks for the heads up. I added the html5 version from Godot to allow more people to test it, but I had little hope it would work fine :-P
I tried it myself on a chrome from a windows 10 and I reached the second level fine, but I haven't debug the game in html5 and I won't have time until next week.
I promise to take a look :-)