charred sparrow
I like the idea of a mirror fight where the boss is a cryptid that can use spells like the players can and utilizes a lot of the in game guns we have access to with attack patterns
Or even have it be a optional boss you can encounter in higher difficulty missions, I just like the idea of a reflection enemy.
Anybody ever played Warframe and remember how cool it was to randomly get targeted by the stalker? I think something like that for Far Far West would be really cool
charred sparrow
Conditionals could be determined through a buildup based off the amount of bosses you kill, increasing the chance of them appearing to hunt you down
or maybe killing a certain amount of cryptids has a chance of getting their attention
Maybe another wishing well possibility etc etc
The cryptid in question could be called "Deathwish" or something like that, I'm sure there are probably cooler titles for a cryptid that actually hunts down the players