Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Assassin	Complete 9 of the Bounties.
Black Gold	Complete KOLCHAK HARBOR Region.
Cosa Nostra	Complete BEKETOV VALLEY Region.
Deadeye	Unlock 10 Sniper Rifles.
Debt Collector	Complete KOLCHAK HARBOR Region on the highest difficulty.
Doppelganger	Complete ARAKCHEYEV FORTRESS Region on the highest difficulty.
Efficient	Kill 3 Enemies with 1 bullet.
Evolution	Buy 57 skills.
Executioner	Complete BEKETOV VALLEY Region on the highest difficulty.
Exitus Acta Probat	Complete ARAKCHEYEV FORTRESS Region.
Final Countdown	Complete SIBIRSKAYA-7 JUNCTION Region.
Freerunner	Kill enemy from zip line.
Frost Wolf	Complete ALTAI MOUNTAINS Region on the highest difficulty.
Growth	Buy 28 skills.
Gunny	Unknown.
Gunslinger	Unlock 7 Sidearms.
Hawk	Unknown.
Headhunter	Complete 5 of the Bounties.
Hitman	Unknown.
Initiation	Buy your first skill.
Interrogator	Interrogate an Officer.
Jack of all Trades	Unlock 14 Gadgets.
Mercenary	Complete first Bounty.
Military Contractor	Complete 13 Contracts.
Navigator	Unlock 5 Regions.
One-man Army	Kill 80 enemies in single mission.
Private Contractor	Complete first Contract.
Sapper	Unknown.
Shade	Unknown.
Sniper	Kill an Enemy from a 500 meters distance.
Snowstorm	Complete ALTAI MOUNTAINS Region.
SpecOps Contractor	Complete 24 Contracts.
The Bigger Picture	Find 7 of collectibles.
The Little Picture	Find the first collectible.
The Whole Picture	Find 14 collectibles.
Trial by Blood	Complete 24 Challenges.
Trial by Fire	Complete 13 of Challenges.
Trial by Ice	Complete first Challenge.
Virtuoso	Kill enemy from each sniper rifle.
Warlord	Complete SIBIRSKAYA-7 JUNCTION Region on the highest difficulty.