Hey!
Thanks a ton for the feedback—we really appreciate it! You’re right, we had some major technical issues before launch that caused us to lose a lot of work, and when rushing to put everything together we couldn't test properly.
We had a problem causing the stepping sound to generate a new instance of itself in memory with every step (which only happened on the browser for some reason, not in debug or desktop) so that's why the ram usage was so high. We also had a problem with the animated sprite sheet making the script call an animation that doesn't exist.
I will push a bug fix once the review period ends so it's at least stable, thank you very much again for taking the time to report this!