Full list of all 16 Virus at Home achievements.
The base game contains 5 achievements, and there is 1 DLC pack containing 11 achievements.
Go outside.
Reach level 5 in nightmare mode,
Reach level 10 in nightmare mode.
Reach level 15 in nightmare mode.
Reach level 20 in nightmare mode.
Reach level 25 in nightmare mode.
Reach level 30 in nightmare mode.
Reach level 35 in nightmare mode.
Reach level 40 in nightmare mode.
Reach level 45 in nightmare mode.
Reach level 50 in nightmare mode.