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

Frequent (Level 2)
20 days on the server. To raise the icon level, spend 30 days on the server

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

Good eye
Make 12,000 headshots

Without weapons
Kill 10,000 enemies with melee weapons

Trusted friend
Help get up 1,200 players

Reviver
Relive 150 players

Survivor
Complete campaigns 100 times