So I customised the "walk here when I click on this spot" destination indicator with a yin-yang icon I was initially intending to use as a "mouse over" indicator over clickable objects, but that didn't work out, so instead I made the clickable things flash when you prompt an NPC for a hint instead, as you can see below.
These updates, along with a full reworking of the first two fights, feature in the current release of the demo, v1.04, which you can download for Windows and HTML5 from here or from my itch.io project page. A Mac version is also available from my website, FutureGhostGame.com.