The stretch goals tiles are optional.
During setup, choose the Stretch goal tiles you want to use, and remove from the game an equal number of monster tiles of the same terrain type.
3 points per ice chicken monster.
3 points per furious dragon (including furious dragon tokens value -5 points)
5 points per unicorn
4 points per second level mutation.
2 points per Gold Diamond. The explorer tile already has a Gold Diamond.