Give me a recipe that lets me put wads of useless paper currency inside a briefcase and then add a unique area spawn that’s a deal gone bad at an old hotel, several men killed from gunshot wounds and two dead men with pistols near the edge of an empty fountain filled with broken glass with a “cash-filled briefcase” on the ground nearby. Please 
As for other move reference terrain encounters you could add a bridge over a river with an NPC that forces the player to answer several challenging riddles to cross…