Rubella joins Aurora's Party.

Execute 3 Surprise Strikes.

Complete The Story Begins

Escape the chasing Nazis on the REICH level without being caught once.

Choose three primary weapons that use different ammo.

Complete the game in Spartan Mode.

Kill 50 Watchmen.

Kill 5 amoebas.

Kill 100 nosalises.

Kill 100 enemies with shotguns.

Kill 15 human enemies with Headshots from at least 30 meters' distance.

Kill 20 lurkers.