After the jam some little features were missing (tutorial tips, showing items on UI, proper fullscreen, some info, one level etc.) and some bugs present. Today I had the idea to polish it a little and release a new version.

Here is my jam game plus 3h of extra polish: https://lazyanttu.itch.io/cthonic-depths-full

Thanks to great advice here, I decided to keep my original jam game intact (it's also hosted on itch io).