Thanks for the feedback! Web build are hard to balance and the performance is more a function of all the stuff we throw on the screen as opposed to the GPU. That being said we are working to get it in a good state so it runs well enough on web.
Other than the the delay on the first level is on purpose to give you some time to explore the movement before we add the enemies. And I agree VFX of lighting is a bit much right now.
Thanks for the feedback!