I'm in the process of testing out some "points of interest" in the screens. Some of these would be tiles (health/score) for meat and bones. Other things would be hazards or ambiance like butterflies and bee hives. I am also going to have healing plants but need to work out what their mechanic is in the game. My original thought was they were a requirement entering the spirit world or healing the sick.
In addition, I want to have burning sections of terrain, collapsed passages and flooded sections as well. Those are a bit far off in terms of setting them up and making sense of them. The fire is easy enough as a static enemy, the others will require some thought and planning.
And the green ball is meant to be a ghost light sprite that floats around...