Ah the fire tornado was a preview of islands - I'll temporarily remove it and add them as part of the island update. Thanks for sharing about this. Aside from that I believe I've fixed all other bugs in v0.14.1, which I just put out.
As for moving ESC to backtick / H (Used for help currently), I think putting it at any other key isn't the most intuitive - I suppose an extra tutorial could be added to teach web players that specifically, though it would make it inconsistent between the downloadable builds and web build. I might deprecate the web build as the game is now on Steam.
As for the perks, I'll probably have to actually implement it so that everyone can try it out and get a feel, as I think just explaining the full system here will require its own post, but understood on all your points!