Here is the full list of all 25 Outbreak: Contagious Memories achievements.
Met a fellow survivor and started your journey.
Secured a useful weapon against the undead.
Reach the city streets overflowing with the undead.
Took refuge underground and reunited with a friend.
Became besieged by a horde of undead.
Reached the parking garage.
Built a plan to get underground.
Reached a not so safe, safe room.
Ran into a dear friend, and a deadly situation.
Get sent to run some errands, time for backtracking.
Reached the supermarket.
Return to your opening hour.
Reached the Caverns.
Reached the final subway platform.
Delivered all parts to repair the subway train.
Defended your compatriots from the onslaught.
Escape via the subway train.
Complete story mode.
Unlock Operation: Rabid Wolf.
Rescue a survivor in Operation: Rabid Wolf.
Survive Operation: Rabid Wolf.
Succumb to the infection.
Repair a weapon.
Upgrade a weapon.
Complete story mode in 2 hours 30 minutes or less as measured by the in-game timer.