Form a party in Fort Hope.

Kill a Snitch without it alerting the horde.

Spend your first Supply Point.

Complete a level while getting at least 50 kills with melee weapons.

Kill at least one of each non-boss Mutation.

Complete a mission without any players being incapacitated or killed.

Complete Search & Rescue

Complete Act 4 on Recruit difficulty or higher.

Revive a fallen teammate.

Complete The Devil's Return

Complete a map without ever triggering a horde from Reekers, Birds, Snitches, or alarms.

Complete all Act 3 maps on Recruit difficulty or higher.

Complete The Dark Before The Dawn