Here is the full list of all 21 SurrounDead achievements.
Take out 200 animals.
Take out 50 animals.
Traverse for 100km with one character.
Take out 5000 zombies with one character.
**REDACTED**
Gain access to a hidden secure laboratory.
Take out 100 human survivors with one character.
Take out 500 zombies with one character.
Take out 10 zombies bosses.
Take out a zombie boss.
Traverse for 10km with one character.
Take out a human survivor.
Find & drive a vehicle.
Catch a fish.
Use a medical item on the player.
Break a bone from a high fall.
Cause the death of your player.
Play 'Survival'.
Place down a buildable.
Gain access to a secure area.
Play SurrounDead during Early Access release.