Complete "Alduin's Wall"

Capture Solitude or Windhelm

Successfully persuade, bribe, and intimidate

Fly Nick's plane. Hopefully you're not afraid of heights (Solo Campaign only).

Buy a house

Complete "The Way of the Voice"

Complete "Bleak Falls Barrow"

Reach Level 10

Make a smithed item, an enchanted item, and a potion

Save the Marshal from the Bliss (Solo Campaign only).

Discover the abandoned old workshop, the source of the Hunter's Dream.

Acquire a Caryll Rune that endows hunters with special strength.

Acquire the Chalice of Pthumeru that seals the catacombs that form a web deep below Yharnam.