I added in lava tiles to Cosmorists, the first hazardous tile that I've added so far. Here's the lava damaging the cosmorist in action:

A video going into more detail about the newly added lava tiles in the game:
What I might do with this in the future:
I do plan to add more tiles like this where it takes the player's health, such as poisonous tiles in the swamp/jungles, liquid nitrogen if I ever add in a planet cold enough to harbor it, and possibly pointy tiles.
There isn't any status effects in the game yet, but I do want to add it in sometime soon so players know what debuff is affecting them!