As of 2016-???

1) First and foremost: Completing the Vending Machine Instructions:
[X]Piece 1
[]Piece 2
[]Piece 3
[]Piece 4
[X]Piece 5
[]Piece 6
[X]Piece 7
[]Piece 8
[]Piece 9
[X]Piece 10
[]Piece 11
[]Piece 12
[]Piece 13
[]Piece 14
[]Piece 15
[X]Piece 16

2) Complete the Slate Pyramid

3) Gain a magic bean
3.5) Climb the Beanstalk

4) Complete Ublish's Lair

5) ...