Collect all trophies.
Kill 100 zombies.
Kill 1000 zombies.
Kill 10 000 zombies, become humanity's hope.
Kill 100 000 zombies. People are waiting for their hero!
Open 5 safes.
Open 50 safes.
Open 500 safes.
Open 1 000 safes. You know you want those goods!
Travel 2 kilometers.
Travel 20 kilometers.
Travel 200 kilometers.
Travel 2 000 kilometers. Journey is more important than destination!
Dig 2 tresures.
Dig 20 tresures.
Dig 200 tresures.
Dig 1 000 tresures. Why should there be anything valuable in the ground?
Shoot enemies 50 times in the head.
Shoot enemies 500 times in the head.
Shoot enemies 5 000 times in the head.
Shoot enemies 50 000 times in the head, to be sure.
Spend 1000 silver coins.
Spend 10 000 silver coins.
Spend 50 000 silver coins, it is the way!
Spend 250 000 silver coins. Money is everything, but you have to spend it!
Find 5 hidden objects.
Kill your first enemy.
Hack computer on highest difficulty.
Find Boris' watch in the latrine.
Give money to the beggar.
Be kidnapped by aliens.
Talk to an animal.
Blow up a rock during one of the quests.