Alien Swarm: Reactive Drop achievements

3.72%

Grenadier Expert

Kill 250 Swarm with the Grenade Launcher.

3.72%

Heavy Assault Specialist

Kill 500 Swarm with the Heavy Rifle.

3.80%

Devastated

Kill 250 Swarm with the Devastator.

3.96%

Firewall Specialist

Kill 100 Swarm with Incendiary Mines.

4.04%

Tactical Explosives Expert

Kill 100 Swarm with Laser Tripmines.

4.04%

Normal Campaign: Tilarus-5

Complete the Tilarus-5 campaign on Normal difficulty or harder.

4.20%

Hard Campaign: Area 9800

Complete the Area 9800 campaign on Hard difficulty or harder.

4.36%

Easy Campaign: Tilarus-5

Complete the Tilarus-5 campaign on Easy difficulty or harder.

4.36%

Railgun Specialist

Kill 250 Swarm with the Rail Rifle.

4.60%

Outstanding Execution: Operation Cleansweep

Complete the Operation Cleansweep campaign on Normal difficulty or harder without any marines dying.

4.68%

Security Expert

Complete 10 computer hacks without access being logged.

4.68%

Hornet Barrage Expert

Kill 100 Swarm with Hornet Barrage attacks.