Black One Blood Brothers achievements

Finish at least once "Siege"

Destroy some weapons cache

Finish a mission with a global scoring of 100% and 5000 XP

Kill 10 enemies

Finish at least once "Prisoner of war"

Finish "Spec Ops" alone

Kill 100 enemies

Finish a mission with a global scoring of 100% and 50000 XP

Finish a mission with a global scoring of 100% and 100 XP

Finish "Spec Ops" with 5 tasks

Finish a mission without dead

Use "Helicopter" insertion