Great catch on the thorns—they're quite overpowered at the moment, haha. The downloaded version is lag-free and offers the best chance for you to defeat all the bosses. We're already working on optimizing and releasing a proper demo in the next few weeks! If you are intrested follow along. There is already a new build with new WASD movements!
https://hamsu-dev.github.io/Personal_Portfolio/thefrogprince.html