Hit people with stink bombs 50 times.

Complete six classes.

Attend the final ceremony.

Kill Hoyt.

Liberate all outposts.

Gather all "Letters of the Lost".

Fully distract 25 enemies with rocks.

Kill Vaas.

Dive more than 60m.

Win $1500 playing poker.

Kill an enemy with a takedown from above from a glider, zipline or parachute.

Activate 9 radio towers.

Shoot off both arms on a Hulk and then extract while it's alive.