Deal more than 50% of the damage to an enemy killed by another player.

Complete 25 Side Missions.

Create a second character.

Discover 5 bunkers.

Destroy 30 Hunters.

Use shotguns to destroy 40 machines.

Travel 90 km on foot.

Use assault rifles to destroy 80 machines.

Use suppressed weapons to destroy 20 enemies.

Destroy 80 Runners.

Complete all Intro Missions.

Use a boombox to lure an enemy.

Use handgun to destroy 20 machines.