Start ... (Level 1)
Score 5,000 points. To raise the icon level, Score 250,000 points

Monster Kill (Level 1)
Kill 10,000 Special Infected. To raise the icon level, Kill 30,000 Special Infected

Infected Hunter (Level 2)
Kill 50,000 Infected. To raise the icon level, Kill 100,000 Infected

Sniper (Level 1)
Make 5,000 kills in head. To raise the icon level, Make 12,000 kills in head

Without weapons
Kill 10,000 enemies with melee weapons

The hunt for gifts
Collect 175 gifts that fall out of bosses