The End?
Observatory
Instead of agreeing with Curly, either avoid her or say 'no' for now. Use the nearby teleporter, and head to Sand Zone.
Sand Zone
Head toward the center of the map. From here you'll find the barrier that previously prevented reaching the middle is gone, and you can freely enter Jenka's house.
Jenka's House
Speak with Misery and Jenka. What happens next...?