Alien Swarm: Reactive Drop achievements

0.82%

Brutal Campaign: Nam Humanum

Complete the Nam Humanum campaign on Brutal difficulty.

0.90%

Easy Campaign: BioGen Corporation

Complete the BioGen Corporation campaign on Easy difficulty or harder.

0.90%

Outstanding Execution: Nam Humanum

Complete the Nam Humanum campaign on Normal difficulty or harder without any marines dying.

0.99%

The Choice of Progress

In Groundwork Labs, upload prohibited data to the ship.

0.99%

Hard Campaign: Nam Humanum

Complete the Nam Humanum campaign on Hard difficulty or harder.

1.48%

Normal Campaign: Nam Humanum

Complete the Nam Humanum campaign on Normal difficulty or harder.

1.72%

Easy Campaign: Nam Humanum

Complete the Nam Humanum campaign on Easy difficulty or harder.

2.13%

Chemical Warfare

Kill 500 Swarm with Gas Grenades.

2.71%

Nuke From Orbit

Kill 100,000 Swarm.

2.71%

Landing Zone Speed Run

Complete Landing Zone within 2:35 on Normal difficulty or harder without any marines dying.

2.71%

Area9800 Landingzone Speed Run

Complete Area9800 Landingzone within 2:28 on Normal difficulty or harder without any marines dying.

2.79%

Brutal Campaign: Tilarus-5

Complete the Tilarus-5 campaign on Brutal difficulty.