Thanks, that's no small praise! I'm glad you liked it ;)
About your suggestion, it's something I've been thinking about for a while now, but I'm not sure how best to do it. I'm afraid a "sonar" ability would make it too easy, so maybe a late-game NPC dropping cryptic hints... Anyway, the point is that I'm experimenting with it and may add it to the game later on. Thanks for the suggestion ;)
Some ideas - some kind of thematically appropriate chime that plays if there's a secret left SOMEWHERE in the "room" (8doors and astalon did this I believe). Keeps it vague enough to not ruin exploration.
If you wanted it to be broader, I cant remember if the map was broken into regions, but an entire region could have an items % on the map
The way I ended up doing it is adding a late-game NPC that tells you in which regions you're missing one or more items: https://dreamnoid.itch.io/the-trespasser/devlog/483703/update-111-bugfix-and-hin...
That way you get an idea where to look for, without knowing precisely in which room it is. Hopefully it will do the trick :)
