Finish the mission at the basic level of difficulty.
Use the healing terminal when you have only the last segment on the health bar.
Use only the stungun to finish the mission.
Collect all credits in the whole level.
Eliminate the combat turret without getting hit.
Kill at least 5 zombies at the same time without reloading.
Eliminate the miniboss without getting hit.
Survive within the specified time limit.
Survive within the specified waves of infected enemies.
Kill 100 monsters with headshots.
Use the regeneration chamber 20 times.
Upgrade at least one weapon up to the maximum of all your values.
You must collect 500.000 of all available credits in whole game.
Killing 50 zombies with the stungun.
Killing 100 zombies with the stungun.
Killing 500 zombies with the stungun.
Killing 500 zombies.
Killing 1000 zombies.
Killing 5000 zombies.
Killing 10000 zombies.
Kill at least 7 enemies with headshots.
Kill all the contaminated to clear the whole area.
Finish the mission using only the secondary weapon.
Finish the mission without using the healing terminal.
Use all the augmentation terminals.
Kill 10 zombies with headshots using your special ability.
Find and use all the augmentation terminals.
Finish the mission in less than 10 minutes with the success rate exceeding 75%.
Finish the mission without using the special ability.
Finish the mission without losing any health.
Kill at least 6 zombies with headshots without reloading.
Finish the mission with the success rate exceeding 85%.
Eliminate all the combat turrets without getting hit.
Finish the mission without using the special ability or healing terminals.
Finish the mission using only one type of the weapon.
Finish the mission in less than 7 minutes.
Complete game on basic difficulty.
Complete game on new game plus difficulty.
