Run a Lighthouse report with Chrome which will point out which elements need work, you'll also get advice like "Delaying first content paint makes users give up on your page" (paraphrased) or "Avoid enormous network payloads: total size was 4,397 KiB". Why is this page of text 4 MB? You might also want to take a look at the number of requests.
I would consider removing this first screen/page if I were you.
I wasn't really concerned about this when I was building it though. It's experimental, not meant to be taken too seriously. I just made it this way because I thought it was cool
I'll see if I can fix some of the things you've mentioned though. I really appreciate the feedback, thanks
Perhaps fix this on mobile (where there is no hover state) by adding captions to each icon that are always visible.
At first I thought it was some social networking site, since the title briefly flashes. Then I didn't really know which button did what. I was a bit confused by those cards in the portfolio, since these gestures aren't common on the web.
All in all it's technically impressive, but the bells and whistles do not improve the browsing experience.
Not bashing on your work, it's very beatiful, i just may be too old/boring for this kind of sites.