Have a seasonal metropolis map. At the moment(as far as I know), there isn’t any Halloween seasonal maps in deathrun, not a single one. Which makes me sad, Halloween, in my opinion, has the best looking themes/decorations.
Why metropolis though?
Because it has a separate, scary path!
So near the end, behind a wall there a separate, unused, unfinished path.
Now, instead of going up that path, go under that staircase.
Look at these traps and spooky path!
Finish it up, make it spooky, and maybe, just maybe, give it some lore.