Alien Swarm: Reactive Drop achievements

4.71%

Hornet Barrage Expert

Kill 100 Swarm with Hornet Barrage attacks.

4.79%

Perfect

Complete a mission on Normal difficulty or harder without receiving any damage.

5.03%

Minigun Master

Kill 250 Swarm with the Minigun.

5.11%

Slaughter Soldier

Kill 250 Swarm with the Chainsaw.

5.11%

Normal Campaign: Research 7

Complete the Research 7 campaign on Normal difficulty or harder.

5.19%

Shotgun Specialist

Kill 250 Swarm with the Shotgun.

5.28%

Hard Campaign: Operation Cleansweep

Complete the Operation Cleansweep campaign on Hard difficulty or harder.

5.36%

Easy Campaign: Research 7

Complete the Research 7 campaign on Easy difficulty or harder.

6.01%

Peace Medic

Heal 300 points of damage in a single mission without dealing any non-melee damage to the Swarm.

6.17%

Normal Campaign: Lana's Escape

Complete the Lana's Escape campaign on Normal difficulty or harder.

6.17%

Normal Campaign: Tears for Tarnor

Complete the Tears for Tarnor campaign on Normal difficulty or harder.

6.49%

Normal Campaign: Paranoia

Complete the Paranoia campaign on Normal difficulty or harder.