Outbreak achievements

Constructed your first barricade.

Successfully overcame a puzzle.

Purchased 20 pieces of equipment in Onslaught.

Survived the first ten waves in Onslaught.

Solved 100 puzzles.

Survive a scenario on Hard or Biohazard Difficulty with one or fewer kills.

Survived the first fifteen waves in Onslaught.

Survived 3 scenarios on Hard Difficulty.

Survive the first twenty five waves in Onslaught.

Survive 5 scenarios on Normal Difficulty.

Constructed 100 barricades.

Clear a wave in Onslaught.